BEGUM, J.; NOOR, A. Around a central element of a nearlattice. GANIT: Journal of Bangladesh Mathematical Society, [S. l.], v. 31, p. 95–104, 2012. DOI: 10.3329/ganit.v31i0.10312. Disponível em: https://banglajol.info/index.php/GANIT/article/view/10312. Acesso em: 26 apr. 2024.