Abdurazakov Abdujabbor, Makhmudova Nasiba, and Mirzamakhmudova Nilufar. “The Numerical Solution of Gas Filtration in Hydrodynamic Interconnected Two-Layer Reservoirs”. Eurasian Journal of Physics,Chemistry and Mathematics, vol. 6, May 2022, pp. 18-21, https://geniusjournals.org/index.php/ejpcm/article/view/1445.