diff --git a/src/app/about/about.component.html b/src/app/about/about.component.html
index 8a70765..786d545 100644
--- a/src/app/about/about.component.html
+++ b/src/app/about/about.component.html
@@ -452,13 +452,6 @@
                           more predefined content classes.
                           In OpenAIRE, the currently used taxonomies are arXiv, MeSH (Medical Subject Headings), ACM and
                           DDC (Dewey Decimal Classification, or Dewey Decimal System).
-                          <br><br>
-                          <hr>
-                          [1] Foufoulas, Y., Stamatogiannakis, L., Dimitropoulos, H., & Ioannidis, Y. (2017, September).
-                          High-Pass Text Filtering for Citation Matching.
-                          In International Conference on Theory and Practice of Digital Libraries (pp. 355-366).
-                          Springer,
-                          Cham.
                         </div>
                       </div>
                       <div *ngIf="!enrichmentMiningReadMore" class="uk-text-center clickable">