AMER, S. Principally Quasi injective system over monoid. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 10, n. 1, p. 3152–3162, 2015. DOI: 10.24297/jam.v10i1.6868. Disponível em: https://rajpub.com/index.php/jam/article/view/6868. Acesso em: 25 apr. 2024.