Hao, Le Phuoc, and Ta Quoc Dung. “Applying the Contact Element for Simulation of Interaction Between Drillstring and Holewall”. Vietnam Journal of Mechanics 25, no. 2 (June 30, 2003): 97–112. Accessed November 9, 2025. https://vjmech.vast.vn/vjmech/article/view/6582.