Shiilegbat, Iderbayar, and Enkhbat Rentsen. “3D Malfatti’s Constrained Optimization Problem”. Journal of Institute of Mathematics and Digital Technology 6, no. 1 (December 27, 2024): 24–30. Accessed December 5, 2025. https://mongoliajol.info/index.php/JIMDT/article/view/3626.