Shtefan, Tatyana A., and H. V. Velichko. “Research the Potential Energy of Forming a Rectangular Plate, Which Pushes Convex Stamp”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics0, no. 1081 (December 3, 2013): 45-53. Accessed May 3, 2024. https://periodicals.karazin.ua/mech_math/article/view/13128.