@incollection{eprints2163,
       publisher = {CQ Press},
           pages = {641--642},
          editor = {Gregory Claeys},
           title = {Popper, Karl},
            year = {2013},
          author = {Stefano Gattei},
         address = {Washington},
          volume = {2},
       booktitle = {Encyclopedia of Modern Political Thought},
             url = {http://eprints.imtlucca.it/2163/},
        abstract = {Encyclopedia entry on Karl Popper's political philosophy}
}