PADMAVATHI, B.S.; AMARANATH, T. Stokes flow past a composite porous spherical shell with a solid core. Archives of Mechanics, Warsaw, Poland, v. 48, n. 2, p. 311–323, 1996. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v48p311. Acesso em: 17 jan. 2026.