He has been researching the history of the Hungarian Roma and Jewish Holocaust, the history of the Hungarian extrem right-wing movements, mainly the Arrow Cross Party. He is the leader of the Yad Vashem Archives Hungarian Research Group from 1994.
As a Professor emeritus, he is currently not teaching. He has been teaching history of Nazism, Fascism, Bolshevism, history of Europe in the 20th century, history of the Holocaust and WWII at the University of Szeged (1975–2017)