Joaquín, Daniel A. “A RELATIONSHIP BETWEEN THE CURVATURE TENSOR AND THE DIFFERENCE TENSOR FOR AFFINE HYPERSURFACES”. Journal of Advance Research in Mathematics And Statistics (ISSN 2208-2409) 7, no. 1 (January 31, 2020): 01–05. Accessed June 15, 2025. https://jarm-s.com/index.php/MS/article/view/27.