JournalsprimsVol. 25 , No. 3DOI 10.2977/prims/1195173347Orbital Stability of the Periodic Solutions of Autonomous Systems with Impulse EffectPavel S. SimeonovUniversity of Plovdiv, BulgariaD. D. BainovUniversity of Plovdiv, BulgariaDownload PDFAbstractIn the present paper the orbital asymptotic stability of the periodic solutions of autonomous systems with impulse effect is investigated. An analogue of the theorem of Andronov-Vitt is proved.