diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000..29abf99
--- /dev/null
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,6 @@
+eclipse.preferences.version=1
+encoding//src/main/java=UTF-8
+encoding//src/main/resources=UTF-8
+encoding//src/test/java=UTF-8
+encoding//src/test/resources=UTF-8
+encoding/<project>=UTF-8
diff --git a/pom.xml b/pom.xml
index dd23d89..d84f009 100644
--- a/pom.xml
+++ b/pom.xml
@@ -86,6 +86,12 @@
 			<version>[3.0.0-SNAPSHOT,4.0.0-SNAPSHOT)</version>
 		</dependency>
 
+		<dependency>
+			<groupId>com.thoughtworks.xstream</groupId>
+			<artifactId>xstream</artifactId>
+			<version>1.4.9</version>
+		</dependency>
+
 		<dependency>
 			<groupId>org.gcube.data.analysis.tabulardata</groupId>
 			<artifactId>cube-manager</artifactId>
@@ -174,7 +180,7 @@
 			<groupId>org.gcube.data.analysis.tabulardata</groupId>
 			<artifactId>operation-sdmx</artifactId>
 			<version>[3.0.0-SNAPSHOT,4.0.0-SNAPSHOT)</version>
-		</dependency> 
+		</dependency>
 
 		<dependency>
 			<groupId>org.gcube.data.analysis.tabulardata</groupId>
@@ -199,11 +205,17 @@
 			<artifactId>operation-view</artifactId>
 			<version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT)</version>
 		</dependency>
-		<dependency> <groupId>org.gcube.data.analysis.tabulardata</groupId> 
-			<artifactId>operation-statistical</artifactId> <version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT)</version> 
-			<exclusions> <exclusion> <artifactId>slf4j-simple</artifactId> <groupId>org.slf4j</groupId> 
-			</exclusion> </exclusions>
-		</dependency> 
+		<dependency>
+			<groupId>org.gcube.data.analysis.tabulardata</groupId>
+			<artifactId>operation-statistical</artifactId>
+			<version>[1.0.0-SNAPSHOT,2.0.0-SNAPSHOT)</version>
+			<exclusions>
+				<exclusion>
+					<artifactId>slf4j-simple</artifactId>
+					<groupId>org.slf4j</groupId>
+				</exclusion>
+			</exclusions>
+		</dependency>
 		<!-- lombok -->
 		<dependency>
 			<groupId>org.projectlombok</groupId>