Doğruöz, S., A. Harmanci, and P. F. Smith. “Modules With Unique Closure Relative to a Torsion Theory. III”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 7 (July 25, 2014): 922–929. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2188.