Thang, Ho Xuan, and Nguyen Xuan Tuyen. “PROJECTIVE REGULAR RESOLUTIONS OF SEMIMODULES”. Hue University Journal of Science: Natural Science 126, no. 1B (July 15, 2017): 37-46. Accessed November 15, 2024. http://222.255.146.83/index.php/hujos-ns/article/view/4272.