diff --git a/src/app/openaireLibrary b/src/app/openaireLibrary
index 410643a..0ec7b82 160000
--- a/src/app/openaireLibrary
+++ b/src/app/openaireLibrary
@@ -1 +1 @@
-Subproject commit 410643a682b184f96982bb228657a16769c622ff
+Subproject commit 0ec7b820ee4fef91eeac7553539482a8a7fbaf94
diff --git a/src/app/resources/references.component.ts b/src/app/resources/references.component.ts
index c852bf2..ea21dba 100644
--- a/src/app/resources/references.component.ts
+++ b/src/app/resources/references.component.ts
@@ -40,17 +40,23 @@ import {SEOService} from '../openaireLibrary/sharedComponents/SEO/SEO.service';
           <div class="uk-padding-large uk-padding-remove-horizontal uk-padding-remove-bottom uk-margin-large-bottom">
             <h3 class="portal-color">Aggregation system</h3>
             <ul class="portal-circle uk-margin-medium-top">
-              <li>Manghi, P., Artini, M., Atzori, C., Bardi, A., Mannocci, A., La Bruzzo, S., Candela, L., Castelli, D. and Pagano, P.
-                (2014), “The D-NET software toolkit: A framework for the realization, maintenance, and operation of aggregative
-                infrastructures”, Program: electronic library and information systems, Vol. 48 No. 4, pp. 322-354.
-                <a href="https://doi.org/10.1108/PROG-08-2013-0045" target="_blank">https://doi.org/10.1108/PROG-08-2013-0045</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1108/PROG-08-2013-0045" target="_blank">
+                  Manghi, P., Artini, M., Atzori, C., Bardi, A., Mannocci, A., La Bruzzo, S., Candela, L., Castelli, D. and Pagano, P.
+                  (2014), “The D-NET software toolkit: A framework for the realization, maintenance, and operation of aggregative
+                  infrastructures”, Program: electronic library and information systems, Vol. 48 No. 4, pp. 322-354.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Michele Artini, Claudio Atzori, Alessia Bardi, Sandro La Bruzzo, Paolo Manghi, & Andrea Mannocci. (2016, November 24). The
-                D-NET software toolkit: dnet-basic-aggregator (Version 1.3.0). Zenodo.
-                <a href="http://doi.org/10.5281/zenodo.168362" target="_blank">http://doi.org/10.5281/zenodo.168362</a>
+                <a href="https://explore.openaire.eu/search/result?pid=10.5281/zenodo.168362" target="_blank">
+                  Michele Artini, Claudio Atzori, Alessia Bardi, Sandro La Bruzzo, Paolo Manghi, & Andrea Mannocci. (2016, November 24). The
+                  D-NET software toolkit: dnet-basic-aggregator (Version 1.3.0). Zenodo.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
-              <li>Atzori, C., Bardi, A., Manghi, P., & Mannocci, A. (2017, January). The OpenAIRE workflows for data management. In Italian
+              <li>
+                Atzori, C., Bardi, A., Manghi, P., & Mannocci, A. (2017, January). The OpenAIRE workflows for data management. In Italian
                 Research Conference on Digital Libraries (pp. 95-107). Springer, Cham.
               </li>
               <li>
@@ -62,99 +68,157 @@ import {SEOService} from '../openaireLibrary/sharedComponents/SEO/SEO.service';
           <div class="uk-margin-large-bottom">
             <h3 class="portal-color">Deduplication</h3>
             <ul class="portal-circle uk-margin-medium-top">
-              <li>Claudio Atzori, & Paolo Manghi. (2017, February 17). gdup: a big graph entity deduplication system (Version 4.0.5).
-                Zenodo. <a href="http://doi.org/10.5281/zenodo.4302081" target="_blank">http://doi.org/10.5281/zenodo.4302081</a>,
-                <a href="https://code-repo.d4science.org/D-Net/dnet-dedup/releases" target="_blank">https://code-repo.d4science.org/D-Net/dnet-dedup/releases</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.5281/zenodo.4302081" target="_blank">
+                  Claudio Atzori, & Paolo Manghi. (2017, February 17). gdup: a big graph entity deduplication system (Version 4.0.5).
+                  Zenodo.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
+                <a href="https://code-repo.d4science.org/D-Net/dnet-dedup/releases" target="_blank">
+                  https://code-repo.d4science.org/D-Net/dnet-dedup/releases
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Manghi, Paolo, Marko Mikulicic, and Claudio Atzori. "De-duplication of aggregation authority files." International Journal
-                of Metadata, Semantics and Ontologies 7.2 (2012): 114-130. 10.1504/IJMSO.2012.050014.
-              </li>
-              <li>Manghi, P., Atzori, C., De Bonis, M., & Bardi, A. (2020). Entity deduplication in big data graphs for scholarly
-                communication. Data Technologies and Applications. 10.1108/DTA-09-2019-0163.
-              </li>
-              <li>Manghi, P., & Mikulicic, M. (2011, October). PACE: A general-purpose tool for authority control. In Research Conference on
-                Metadata and Semantic Research (pp. 80-92). Springer, Berlin, Heidelberg. 10.1007/978-3-642-24731-6_8
+                <a href="https://explore.openaire.eu/search/result?pid=10.1504/IJMSO.2012.050014" target="_blank">
+                  Manghi, Paolo, Marko Mikulicic, and Claudio Atzori. "De-duplication of aggregation authority files." International Journal
+                  of Metadata, Semantics and Ontologies 7.2 (2012): 114-130.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Atzori, C., Manghi, P., & Bardi, A. (2018, December). GDup: de-duplication of scholarly communication big graphs. In 2018
-                IEEE/ACM 5th International Conference on Big Data Computing Applications and Technologies (BDCAT) (pp. 142-151). IEEE.
-                10.1109/BDCAT.2018.00025.
+                <a href="https://explore.openaire.eu/search/result?pid=10.1108/DTA-09-2019-0163" target="_blank">
+                  Manghi, P., Atzori, C., De Bonis, M., & Bardi, A. (2020). Entity deduplication in big data graphs for scholarly
+                  communication. Data Technologies and Applications.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Atzori, Claudio. "GDup: an Integrated, Scalable Big Graph Deduplication System." (2016). 10.5281/zenodo.1454880.
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/978-3-642-24731-6_8" target="_blank">
+                  Manghi, P., & Mikulicic, M. (2011, October). PACE: A general-purpose tool for authority control. In Research Conference on
+                  Metadata and Semantic Research (pp. 80-92). Springer, Berlin, Heidelberg.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
+              </li>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1109/BDCAT.2018.00025" target="_blank">
+                  Atzori, C., Manghi, P., & Bardi, A. (2018, December). GDup: de-duplication of scholarly communication big graphs. In 2018
+                  IEEE/ACM 5th International Conference on Big Data Computing Applications and Technologies (BDCAT) (pp. 142-151). IEEE.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
+              </li>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.5281/zenodo.1454880" target="_blank">
+                  Atzori, Claudio. "GDup: an Integrated, Scalable Big Graph Deduplication System." (2016).
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
             </ul>
           </div>
           <div class="uk-margin-large-bottom">
             <h3 class="portal-color">Mining</h3>
             <ul class="portal-circle uk-margin-medium-top">
-              <li>M. Kobos, Ł. Bolikowski, M. Horst, P. Manghi, N. Manola, J. Schirrwagen, “Information inference in scholarly communication
-                infrastructures: the OpenAIREplus project experience”, Procedia Computer Science 38, 92-99,
-                <a href="http://dx.doi.org/10.1016/j.procs.2014.10.016" target="_blank">http://dx.doi.org/10.1016/j.procs.2014.10.016</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1016/j.procs.2014.10.016" target="_blank">
+                  M. Kobos, Ł. Bolikowski, M. Horst, P. Manghi, N. Manola, J. Schirrwagen, “Information inference in scholarly communication
+                  infrastructures: the OpenAIREplus project experience”, Procedia Computer Science 38, 92-99.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Tkaczyk, D., Szostek, P., Fedoryszak, M. et al. CERMINE: automatic extraction of structured metadata from scientific
-                literature. IJDAR 18, 317–335 (2015). <a href="https://doi.org/10.1007/s10032-015-0249-8" target="_blank">https://doi.org/10.1007/s10032-015-0249-8</a>
-              </li>
-              <li>Giannakopoulos T., Foufoulas Y., Dimitropoulos H., Manola N. (2019) “Interactive Text Analysis and Information
-                Extraction”. In: Manghi P., Candela L., Silvello G. (eds) Digital Libraries: Supporting Open Science. IRCDL 2019.
-                Communications in Computer and Information Science, vol 988. Springer, Cham.
-                <a href="https://doi.org/10.1007/978-3-030-11226-4_27" target="_blank">https://doi.org/10.1007/978-3-030-11226-4_27</a>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/s10032-015-0249-8" target="_blank">
+                  Tkaczyk, D., Szostek, P., Fedoryszak, M. et al. CERMINE: automatic extraction of structured metadata from scientific
+                  literature. IJDAR 18, 317–335 (2015).
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                Foufoulas Y., Stamatogiannakis L., Dimitropoulos H., Ioannidis Y. (2017) “High-Pass Text Filtering for Citation Matching”.
-                In: Kamps J., Tsakonas G., Manolopoulos Y., Iliadis L., Karydis I. (eds) Research and Advanced Technology for Digital
-                Libraries. TPDL 2017. Lecture Notes in Computer Science, vol 10450. Springer, Cham.
-                <a href="https://doi.org/10.1007/978-3-319-67008-9_28" target="_blank">https://doi.org/10.1007/978-3-319-67008-9_28</a>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/978-3-030-11226-4_27" target="_blank">
+                  Giannakopoulos T., Foufoulas Y., Dimitropoulos H., Manola N. (2019) “Interactive Text Analysis and Information
+                  Extraction”. In: Manghi P., Candela L., Silvello G. (eds) Digital Libraries: Supporting Open Science. IRCDL 2019.
+                  Communications in Computer and Information Science, vol 988. Springer, Cham.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
               <li>
-                T. Giannakopoulos, I. Foufoulas, E. Stamatogiannakis, H. Dimitropoulos, N. Manola, and Y. Ioannidis. 2015. “Visual-Based
-                Classification of Figures from Scientific Literature”. In Proceedings of the 24th International Conference on World Wide Web
-                (WWW '15 Companion). Association for Computing Machinery, New York, NY, USA, 1059–1060.
-                DOI: <a href="https://doi.org/10.1145/2740908.2742024" target="_blank">https://doi.org/10.1145/2740908.2742024</a>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/978-3-319-67008-9_28" target="_blank">
+                  Foufoulas Y., Stamatogiannakis L., Dimitropoulos H., Ioannidis Y. (2017) “High-Pass Text Filtering for Citation Matching”.
+                  In: Kamps J., Tsakonas G., Manolopoulos Y., Iliadis L., Karydis I. (eds) Research and Advanced Technology for Digital
+                  Libraries. TPDL 2017. Lecture Notes in Computer Science, vol 10450. Springer, Cham.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
-              <li>Giannakopoulos, T., Foufoulas, I., Stamatogiannakis, E., Dimitropoulos, H., Manola, N., & Ioannidis, Y. (2014).
-                “Discovering and Visualizing Interdisciplinary Content Classes in Scientific Publications”. D-Lib Mag., Volume 20, Number
-                11/12. <a href="https://doi.org/10.1045/november14-giannakopoulos" target="_blank">https://doi.org/10.1045/november14-giannakopoulos</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1145/2740908.2742024" target="_blank">
+                  T. Giannakopoulos, I. Foufoulas, E. Stamatogiannakis, H. Dimitropoulos, N. Manola, and Y. Ioannidis. 2015. “Visual-Based
+                  Classification of Figures from Scientific Literature”. In Proceedings of the 24th International Conference on World Wide
+                  Web
+                  (WWW '15 Companion). Association for Computing Machinery, New York, NY, USA, 1059–1060.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
-              <li>Giannakopoulos T., Stamatogiannakis E., Foufoulas I., Dimitropoulos H., Manola N., Ioannidis Y. (2014) “Content
-                Visualization of Scientific Corpora Using an Extensible Relational Database Implementation”. In: Bolikowski Ł., Casarosa V.,
-                Goodale P., Houssos N., Manghi P., Schirrwagen J. (eds) Theory and Practice of Digital Libraries -- TPDL 2013 Selected
-                Workshops. TPDL 2013. Communications in Computer and Information Science, vol 416. Springer, Cham.
-                <a href="https://doi.org/10.1007/978-3-319-08425-1_10" target="_blank">https://doi.org/10.1007/978-3-319-08425-1_10</a>,
-                also in: <a
-                    href="https://books.google.gr/books?hl=en&lr=&id=EVMqBAAAQBAJ&oi=fnd&pg=PA101&dq=info:SJ9N406OYsEJ:scholar.google.com&ots=z-eB4d3wkv&sig=rEc-V3CBqcOD6gja6p5wLVHq4jc&redir_esc=y#v=onepage&q&f=false"
-                    target="_blank">Google Books</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1045/november14-giannakopoulos" target="_blank">
+                  Giannakopoulos, T., Foufoulas, I., Stamatogiannakis, E., Dimitropoulos, H., Manola, N., & Ioannidis, Y. (2014).
+                  “Discovering and Visualizing Interdisciplinary Content Classes in Scientific Publications”. D-Lib Mag., Volume 20, Number
+                  11/12.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
-              <li>Giannakopoulos T., Dimitropoulos H., Metaxas O., Manola N., Ioannidis Y. (2013) “Supervised Content Visualization of
-                Scientific Publications: A Case Study on the ArXiv Dataset”. In: Kłopotek M.A., Koronacki J., Marciniak M., Mykowiecka A.,
-                Wierzchoń S.T. (eds) Language Processing and Intelligent Information Systems. IIS 2013. Lecture Notes in Computer Science,
-                vol 7912. Springer, Berlin, Heidelberg. <a href="https://doi.org/10.1007/978-3-642-38634-3_23" target="_blank">https://doi.org/10.1007/978-3-642-38634-3_23</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/978-3-319-08425-1_10" target="_blank">
+                  Giannakopoulos T., Stamatogiannakis E., Foufoulas I., Dimitropoulos H., Manola N., Ioannidis Y. (2014) “Content
+                  Visualization of Scientific Corpora Using an Extensible Relational Database Implementation”. In: Bolikowski Ł., Casarosa
+                  V.,
+                  Goodale P., Houssos N., Manghi P., Schirrwagen J. (eds) Theory and Practice of Digital Libraries -- TPDL 2013 Selected
+                  Workshops. TPDL 2013. Communications in Computer and Information Science, vol 416. Springer, Cham.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
+                Also in: <a
+                  href="https://books.google.gr/books?hl=en&lr=&id=EVMqBAAAQBAJ&oi=fnd&pg=PA101&dq=info:SJ9N406OYsEJ:scholar.google.com&ots=z-eB4d3wkv&sig=rEc-V3CBqcOD6gja6p5wLVHq4jc&redir_esc=y#v=onepage&q&f=false"
+                  target="_blank">
+                Google Books
+                <span class="custom-external custom-icon space"></span>
+              </a>
               </li>
-              <li>Y. Chronis, Y. Foufoulas, V. Nikolopoulos, A. Papadopoulos, L. Stamatogiannakis, C. Svingos, Y. E. Ioannidis, "A
-                Relational Approach to Complex Dataflows", in Workshop Proceedings of the EDBT/ICDT 2016 (MEDAL 2016) Joint Conference
-                (March 15, 2016, Bordeaux, France) on CEUR-WS.org (ISSN 1613-0073): <a href="http://ceur-ws.org/Vol-1558/paper45.pdf"
-                                                                                       target="_blank">http://ceur-ws.org/Vol-1558/paper45.pdf</a>
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.1007/978-3-642-38634-3_23" target="_blank">
+                  Giannakopoulos T., Dimitropoulos H., Metaxas O., Manola N., Ioannidis Y. (2013) “Supervised Content Visualization of
+                  Scientific Publications: A Case Study on the ArXiv Dataset”. In: Kłopotek M.A., Koronacki J., Marciniak M., Mykowiecka A.,
+                  Wierzchoń S.T. (eds) Language Processing and Intelligent Information Systems. IIS 2013. Lecture Notes in Computer Science,
+                  vol 7912. Springer, Berlin, Heidelberg.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
+              </li>
+              <li>
+                <a href="http://ceur-ws.org/Vol-1558/paper45.pdf"
+                   target="_blank">
+                  Y. Chronis, Y. Foufoulas, V. Nikolopoulos, A. Papadopoulos, L. Stamatogiannakis, C. Svingos, Y. E. Ioannidis, "A
+                  Relational Approach to Complex Dataflows", in Workshop Proceedings of the EDBT/ICDT 2016 (MEDAL 2016) Joint Conference
+                  (March 15, 2016, Bordeaux, France) on CEUR-WS.org (ISSN 1613-0073)
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
             </ul>
           </div>
           <div class="uk-margin-large-bottom">
             <h3 class="portal-color">Portals</h3>
             <ul class="portal-circle uk-margin-medium-top">
-              <li>Baglioni M. et al. (2019) The OpenAIRE Research Community Dashboard: On Blending Scientific Workflows and Scientific
-                Publishing. In: Doucet A., Isaac A., Golub K., Aalberg T., Jatowt A. (eds) Digital Libraries for Open Knowledge. TPDL 2019.
-                Lecture Notes in Computer Science, vol 11799. Springer, Cham.
-                <a href="http://doi-org-443.webvpn.fjmu.edu.cn/10.1007/978-3-030-30760-8_5" target="_blank">http://doi-org-443.webvpn.fjmu.edu.cn/10.1007/978-3-030-30760-8_5</a>
-                (Open Access version at
-                <a href="https://doi.org/10.5281/zenodo.3467104" target="_blank">https://doi.org/10.5281/zenodo.3467104</a>).
+              <li>
+                <a href="https://explore.openaire.eu/search/result?pid=10.5281/zenodo.3467104" target="_blank">
+                  Baglioni M. et al. (2019) The OpenAIRE Research Community Dashboard: On Blending Scientific Workflows and Scientific
+                  Publishing. In: Doucet A., Isaac A., Golub K., Aalberg T., Jatowt A. (eds) Digital Libraries for Open Knowledge. TPDL 2019.
+                  Lecture Notes in Computer Science, vol 11799. Springer, Cham.
+                  <span class="custom-external custom-icon space"></span>
+                </a>
               </li>
             </ul>
           </div>
           <div class="uk-margin-large-bottom">
             <h3 class="portal-color">Broker Service</h3>
             <ul class="portal-circle uk-margin-medium-top">
-              <li>Artini, M., Atzori, C., Bardi, A., La Bruzzo, S., Manghi, P., & Mannocci, A. (2015). The OpenAIRE literature broker
+              <li>
+                Artini, M., Atzori, C., Bardi, A., La Bruzzo, S., Manghi, P., & Mannocci, A. (2015). The OpenAIRE literature broker
                 service for institutional repositories. D-Lib Magazine, 21(11/12), 1.
               </li>
               <li>Manghi, P., Atzori, C., Bardi, A., La Bruzzo, S., & Artini, M. (2016, February). Realizing a Scalable and History-Aware
diff --git a/src/assets/common-assets b/src/assets/common-assets
index 2f572df..ffc664c 160000
--- a/src/assets/common-assets
+++ b/src/assets/common-assets
@@ -1 +1 @@
-Subproject commit 2f572df5783cb32cc84969b75939e45ffce3b424
+Subproject commit ffc664c3672226fb16eacb4886a3f328f5bf1d33