Ivanova-Karatopraklieva, I. (2005) “ON INFINITESIMAL RIGIDITY OF HYPERSURFACES IN EUCLIDEAN SPACE”, Ann. Sofia Univ. Fac. Math. and Inf, 97, pp. 143–150. Available at: https://annual.uni-sofia.bg/index.php/fmi/article/view/152 (Accessed: 22 November 2024).