Differential equations and the calculus of variations /
Elsgolts, L. E.
Differential equations and the calculus of variations / L. Elsgolts ; translated from the Russian by George Yankovsky. - Moscow : MIR Publishers, 1970. - 440 p. :
EXBLIB4716
Differential equations.
515.35 / Di
Differential equations and the calculus of variations / L. Elsgolts ; translated from the Russian by George Yankovsky. - Moscow : MIR Publishers, 1970. - 440 p. :
EXBLIB4716
Differential equations.
515.35 / Di