A. Mahmood, .-. Saifullah, and G. Bolat, “Some exact solutions for the rotational flow of a generalized second-grade fluid between two circular cylinders”, Arch. Mech., vol. 60, no. 5, pp. 385–401, Sep. 2008, Accessed: Jan. 17, 2026. [Online]. Available: http://am.ippt.gov.pl/index.php/am/article/view/v60p385