Hrechnieva, Maryna, and Polina Stiehantseva. “On the Existence of a Minimal Time-Like Surface of the Minkowski Space With Constant Curvature of Its Grassmann Image”. Proceedings of the International Geometry Center 17, no. 3 (December 22, 2024): 244-255. Accessed June 28, 2026. https://journals.ontu.edu.ua/index.php/geometry/article/view/2879.