ParasyukI. O., RepetaB. V., and SamoilenkoA. M. “Dynamical Bifurcation of Multifrequency Oscillations in a Fast-Slow System”. Ukrains’kyi Matematychnyi Zhurnal 67, no. 7 (July 25, 2015): 890-915. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2032.