Karel Cornelis Berkhoff (born 1965) is a senior researcher at NIOD Institute for War, Holocaust and Genocide Studies in Amsterdam. Berkhoff studied history and Russian studies at the University of Amsterdam, Soviet Studies at Harvard University and graduated in 1998 as a historian at the University of Toronto, studying under Paul Robert Magocsi, Chair of Ukrainian Studies. He studies primarily World War II in Russia and Eastern Europe. He was an advisor to the ZDF documentary "Holocaust" (2000). Source: Wikipedia (en)