Dumir, P.C., M.L. Ghandi, and Y. Nath. “Axisymmetric Static and Dynamic Buckling of Ortotropic Shallow Spherical Caps With Initial Imperfections”. Engineering Transactions 32, no. 2 (June 30, 1984): 211–223. Accessed January 17, 2026. http://et.ippt.gov.pl/index.php/et/article/view/1892.