Shu, S. and Zhu, T. (2016) “Hypersurfaces with nonzero constant Gauss – Kronecker curvature in $M^{n+1}(±1)$”, Ukrains’kyi Matematychnyi Zhurnal, 68(11), pp. 1540-1551. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/1940 (Accessed: 20April2024).