Aleynikov, Sergey, and Alexander Sedaev. “Implementation of Dual Grid Technique in BEM Analysis of 3D Contact Problems”. Computer Assisted Methods in Engineering and Science 7, no. 2 (June 30, 2000): 167–184. Accessed February 23, 2026. https://cames.ippt.pan.pl/index.php/cames/article/view/1248.