S. Heidari, R. Nikandish, and M. J. Nikmehr, “Properties of a certain product of submodules”, Ukr. Mat. Zhurn., vol. 63, no. 4, pp. 502–512, Apr. 2011, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2736