@article{Petryshyn_Samoilenko_Sopronyuk_2003, title={Construction of an Integral Manifold of a Multifrequency Oscillation System with Fixed Times of Pulse Action}, volume={55}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/3940}, abstractNote={We determine a class of multifrequency resonance systems with pulse action for which an integral manifold exists. We construct a function that determines a discontinuous integral manifold and investigate its properties.}, number={5}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Petryshyn, R. I. and Samoilenko, A. M. and SopronyukТ. M.}, year={2003}, month={May}, pages={641-662} }