Evstaf’evR. Yu. “On Artinian Rings Satisfying the Engel Condition”. Ukrains’kyi Matematychnyi Zhurnal 58, no. 9 (September 25, 2006): 1264–1270. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3527.