PUSPITA, N. P.; WIJAYANTI, I. E.; SURODJO, B. The Necessary and Sufficient Condition of Clean R-Coalgebra e⇀C↼e. Journal of the Indonesian Mathematical Society, [S. l.], v. 28, n. 2, p. 215–220, 2022. DOI: 10.22342/jims.28.2.1066.215-220. Disponível em: https://jims-a.org/index.php/jimsa/article/view/1066. Acesso em: 26 apr. 2024.