Kołodziej, J.A. “Some Comments on the Resistance Experienced by a Porous Sphere Moving in a Viscous Incompressible Fluid at Low Reynolds Numbers”. Engineering Transactions 28, no. 1 (March 30, 1980): 41–48. Accessed August 15, 2025. https://et.ippt.pan.pl/index.php/et/article/view/2042.