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Showing results 1 to 5 of 5
Issue DateTitleAuthor(s)Publisher
1973 On the positive solutions of some systems of ordinary differential equationsGeorgiev, NekoBulgarian Academy of Sciences
1973 On the secular terms of a class of solutions of an autonomic system of differential equations in case of polynomial non-linearities of second degreeMeent, Maung TaungBulgarian Academy of Sciences
1970 Periodic solutions of a weakly nonlinear autonomic system differential equations by critical caseBradistilov, Georgi; Boyadžiev, GeorgiBulgarian Academy of Sciences
1969 Periodische Lösungen Eines Autonomen Systems bei Ganzzahligem Verhältnis der Wwurzeln der Charakteristischen GleichungBradistilov, Georgi; Bojadžiev, Georgi; Lubich, VladimirBulgarian Academy of Sciences
1974 Some applications of normal forms in non-linear oscillationsStaržinskij, VjačeslavBulgarian Academy of Sciences
Showing results 1 to 5 of 5

 

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