EtemadDehkordy A. “A Study on Tensor Product Surfaces in Low-Dimensional Euclidean Spaces”. Ukrains’kyi Matematychnyi Zhurnal 64, no. 12 (December 25, 2012): 1630-1640. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2687.