Huseyin, Nesir. “Compactness of the Set of Trajectories of the Control System Described by a Urysohn Type Integral Equation”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 7, no. 1 (December 12, 2016): 59–65. Accessed April 3, 2025. http://ijocta.org/index.php/files/article/view/299.