DEY, K. K.; PAUL, A. C. On Left Centralizers of Semiprime Γ-Rings. Journal of Scientific Research, [S. l.], v. 4, n. 2, p. 349, 2012. DOI: 10.3329/jsr.v4i2.8691. Disponível em: https://banglajol.info/index.php/JSR/article/view/8691. Acesso em: 23 apr. 2024.