CRIBLEZ, Lucien. Educational expansion through a differentiation of the educational system: an example of the middle secondary school level (eighth grade.). Swiss Journal of Educational Research, Bern, v. 23, n. 1, p. 95–118, 2001. DOI: 10.24452/sjer.23.1.4598. Disponível em: https://sjer.ch/article/view/4598. Acesso em: 14 mar. 2025.