WACHOWICZ, Teresa Cristina. Auxiliary and aspectualizer verbs: some syntactic and semantic distinctions. Revista Letras, [S. l.], v. 73, 2007. DOI: 10.5380/rel.v73i0.7555. Disponível em: https://revistas.ufpr.br/letras/article/view/7555. Acesso em: 7 jan. 2026.