I. N. Molchanov and E. F. Galba, “Variational statements of a statical problem of the elasticity theory under the preset external forces”, Ukr. Mat. Zhurn., vol. 43, no. 2, pp. 158–161, Jun. 2025, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/9350