“Asymptotic nonlinear multimodal method for liquid sloshing in an upright circular cylindrical tank. Part 1: Modal equations”, НК, vol. 14, no. 4, pp. 482–495, Dec. 2011, Accessed: Jan. 21, 2026. [Online]. Available: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/622