Christov, Christo, and Ivan Tzankov. “Numerical Investigation of the Boundary Layer Flow Around Impulsively Moved Cylinder”. Ann. Sofia Univ. Fac. Math. and Inf. 84 (December 12, 1993): 103–122. Accessed April 4, 2025. https://ftl5.uni-sofia.bg./index.php/fmi/article/view/474.