C. Nebiyev and A. Pancar, “On strongly $\oplus$-supplemented modules”, Ukr. Mat. Zhurn., vol. 63, no. 5, pp. 662–667, May 2011, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2751