SYPIAŃSKA, J. L1 vowels of multilinguals: the applicability of SLM in multilingualism. Research in Language, [S. l.], v. 14, n. 1, p. 79–94, 2016. DOI: 10.1515/rela-2016-0003. Disponível em: https://czasopisma.uni.lodz.pl/research/article/view/2349. Acesso em: 14 may. 2024.