Elshehawey, E.F., M.A. Kamel, and F.N. Ibrahim. 1985. “Hydromagnetic Flow Over a Stretching Sheet of a Viscoelastic Fluid With Uniform Suction at the Wall and Heat Transfer”. Engineering Transactions 33 (3): 299-310. https://et3.ippt.pan.pl/index.php/et/article/view/1850.