Purnomo, Joko, Wong Foek Tjong, Wijaya W.C., and Putra J.S. “Displacement and Stress Function-Based Linear and Quadratic Triangular Elements for Saint-Venant Torsional Problems”. Civil Engineering Dimension 20, no. 2 (October 8, 2018): 70–77. Accessed October 4, 2025. https://ced.petra.ac.id/index.php/civ/article/view/21129.