1.
ASHRAF M. SOME COMMUTATIVITY THEOREMS FOR ASSOCIATIVE RINGS WITH CONSTRAINTS INVOLVING A NIL SUDSET. Tamkang J. Math. [Internet]. 1991 Sep. 1 [cited 2022 Aug. 11];22(3):285-97. Available from: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4613