JAHANARA, B.; MAJUMDAR, S. THE LATTICE OF ALL SEMI-SIMPLE CLASSES OF RINGS. Khulna University Studies, [S. l.], p. 501–503, 2001. DOI: 10.53808/KUS.2001.3.2.0136-se. Disponível em: https://kus.ku.ac.bd/kustudies/article/view/648. Acesso em: 22 apr. 2026.