B. Padmavathi and T. Amaranath, “Stokes flow past a composite porous spherical shell with a solid core”, Arch. Mech., vol. 48, no. 2, pp. 311–323, Jan. 1996, Accessed: Dec. 07, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v48p311