Ovsyannikov L.V. Gruppovye svoystva differentsialnykh uravneniy./Oatsyannikov L.V. Group properties of differential equations. In Russian - landofmagazines.com

TransliterationOvsyannikov L.V. Gruppovye svoystva differentsialnykh uravneniy.

In EnglishOatsyannikov L.V. Group properties of differential equations. In Russian

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