How to punish National-Socialist crimes in Poland? : genocide according to the definition of Jerzy Sawicki - Gulińska-Jurgiel, Paulina, 1979- 1979- (Ends of war. - edited by Paulina Gulińska-Jurgiel, Yvonne Kleinmann, Miloš Řezník and Dorothea Warneck, 2019)