“Analysis of the small oscillations of a heavy almost homogeneous inviscid liquid partially filling an elastic body with negligible density”, Punjab Univ. J. Math., vol. 52, no. 1, pp. 99–119, May 2025, Accessed: Jun. 29, 2025. [Online]. Available: https://pujm.pu.edu.pk/index.php/pujm/article/view/315