ŁUKOWSKI, J.; KACZMAREK, M. Laboratory Methods of Determination of Pore Structure Parameters: Formation Factor and Tortuosity of Permeable Media by Electric Methods. Engineering Transactions, [S. l.], v. 50, n. 4, p. 267–286, 2005. DOI: 10.24423/engtrans.532.2002. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/532. Acesso em: 24 jul. 2025.