Vespasian Pella. Report to the Third International Congress of Penal Law. Palermo, 1933. Cited in: Mark Lewis. The Birth of the New Justice: The Internationalization of Crime and Punishment, 1919–1950. Oxford University Press, 2014. Р. 188, citing Troisième Congrès International de Droit Pénal, Palerme, 3–8 avril 1933, Actes du Congrès. 737, 918.