Khong Doan Dien, Nguyen Van Huyen, and Nguyen Duy Chinh. “ON AN ALGORITHM FOR ANALYSIS OF STATICALLY INDETERMINATE BEAMS”. UTEHY Journal of Applied Science and Technology, Vol. 13, Apr. 2017, pp. 9-13, http://tapchi.utehy.edu.vn/index.php/jst/article/view/205.