BÌNH, Nguyễn Duy. On the comass of forms-products. VNU Journal of Science: Natural Sciences and Technology, [S.l.], v. 12, n. 1, mar. 1996. ISSN 2588-1140. Available at: <https://js.vnu.edu.vn/NST/article/view/4083>. Date accessed: 25 nov. 2024.