Phu Vinh N, Dinh Tung N. THE AREA FORMULA OF POLYGON FOR THREE DIMENSIONAL, VOLUME OF POLYGON AND THE APPLICATION TO DESIGN A NET IN FINITE ELEMENT METHOD. Science and Technology Development Journal [Internet]. 31Jul.2004 [cited 22Dec.2024];7(7):5-1. Available from: http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3224