TransliterationAndronov A.A., Leontovich E.A., Gordon I.I., Mayer A.G. Kachestvennaya teoriya dinamicheskikh sistem vtorogo poryadka.
In EnglishAndronov A.A., Leontovich E.A., Gordon I.I., Mayer A.G. Qualitative theory of dynamic systems of the second order. In Russian
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