STAMM, M. The rich get richer and the poor get poorer? Matthew effects and achievement differences in support programmes. Swiss Journal of Educational Research, [S. l.], v. 32, n. 3, p. 511–532, 2010. DOI: 10.24452/sjer.32.3.4846. Disponível em: https://sjer.ch/article/view/4846. Acesso em: 25 apr. 2024.