MAHMOOD, A.; SAIFULLAH, -; BOLAT, G. Some exact solutions for the rotational flow of a generalized second-grade fluid between two circular cylinders. Archives of Mechanics, Warsaw, Poland, v. 60, n. 5, p. 385–401, 2008. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v60p385. Acesso em: 17 jan. 2026.