M. A. Berezhnoi, “Small oscillations of a viscous incompressible fluid with a large number of small interacting particles in the case of their surface distribution”, Ukr. Mat. Zhurn., vol. 61, no. 3, pp. 302–321, Mar. 2009, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3021