Lakusta, L. M., Petryshyn, R. I. and Samoilenko, A. M. (2002) “Averaging of Boundary-Value Problems with Parameters for Multifrequency Impulsive Systems”, Ukrains’kyi Matematychnyi Zhurnal, 54(9), pp. 1237-1249. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4162 (Accessed: 10May2024).