FREY, M.; PRUESSEN, R. W. Introduction. Comparativ, [S. l.], v. 19, n. 4, p. 7–9, 2009. DOI: 10.26014/j.comp.2009.04.01. Disponível em: https://www.comparativ.net/v2/article/view/261. Acesso em: 4 may. 2024.