NikmehrM. J. “Generalized Semicommutative and Skew Armendariz Ideals”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 9 (September 25, 2014): 1213–1222. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2212.