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 ### SSHOC Citation Service prototype
 
-The source code of the _SSHOC Citation Service prototype_  the back end used by the [Citation Viewer Prototype](https://hdnlab1.isti.cnr.it/d3search/).
+The source code of the _SSHOC Citation Service prototype_  the back end used by the [Citation Viewer Prototype](http://v4e-lab.isti.cnr.it/citview/demo/index.html).