Sobieski, Wojciech, and Seweryn Lipiński. “The Analysis of the Relations Between Porosity and Tortuosity in Granular Beds”. Technical Sciences 20, no. 1 (January 27, 2017): 75–85. Accessed May 8, 2024. https://czasopisma.uwm.edu.pl/index.php/ts/article/view/2912.