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Information × Registration Number 0299U001999, 0197U000441 , R & D reports Title New approuch development for qualitive behavior studying of solutions of differential and functional-differential equations. popup.stage_title Head Persidskij Sergij Konstyantynovich, Registration Date 17-09-2001 Organization National Taurida V. Vernadsky University popup.description2 New stability criteria for differential and functional- differential equations are obtained. Existence theorem for periodic and quasi-periodic solutions of differential-differens equations are proved. Product Description popup.authors popup.nrat_date 2020-04-02 Close