Mahmudova M.M. NENA. MATHEMATICAL MODELING OF THE GAS FILTRATION PROCESS IN DIRECTLY CONNECTED THREE-LAYER POROUS MEDIUM LAYERS. conf [Internet]. 2023 Dec. 11 [cited 2024 Jul. 22];11(1):12-7. Available from: https://confrencea.org/index.php/confrenceas/article/view/1003