Fadeev S.I.,  Kogay V.V. Lineynye i nelineynye kraevye zadachi dlya sistem obyknovennykh differentsialnykh uravneniy./Fadeev S.I.,  Kogai V.V. Linear and non-linear boundary problems for systems of ordinary differential equations. In Russian - landofmagazines.com

TransliterationFadeev S.I., Kogay V.V. Lineynye i nelineynye kraevye zadachi dlya sistem obyknovennykh differentsialnykh uravneniy.

In EnglishFadeev S.I., Kogai V.V. Linear and non-linear boundary problems for systems of ordinary differential equations. In Russian

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