Elsgolts L. (1970). Differential equations and the calculus of variations tr from the Russian by George Yankovsky.
استشهاد بنمط شيكاغوElsgolts L. Differential Equations and the Calculus of Variations Tr from the Russian by George Yankovsky. 1970.
MLA استشهادElsgolts L. Differential Equations and the Calculus of Variations Tr from the Russian by George Yankovsky. 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.