Cyberbullying victimization prevalence and associations with internalizing and externalizing problems among adolescents in six European countries. - Artemis Tsitsika; Mari Janikian; Szymon Wójcik; Katarzyna Makaruk; Eleni C. Tzavela; Chara Tzavara; Donald Greydanus; Joav Merrick; Clive Richardson (Comput. Hum. Behav., 2015)