Secondary school educators' perceptions and practices in handling cyberbullying among adolescents: A cluster analysis. - Ann DeSmet; Nathalie Aelterman; Sara Bastiaensens; Katrien Van Cleemput; Karolien Poels; Heidi Vandebosch; Greet Cardon; Ilse De Bourdeaudhuij (Comput. Educ., 2015)