OERTEL, Lars; SCHMIDT, Marlis; MELZER, Wolfgang. Violence in schools: The relationship between classroom heterogeneity and mobbing-incidents. Swiss Journal of Educational Research, Bern, v. 31, n. 1, p. 99–116, 2009. DOI: 10.24452/sjer.36.1.4810. Disponível em: https://sjer.ch/article/view/4810. Acesso em: 30 jan. 2025.