Differential equations and the calculus of variations
Elsgolts, L.
Differential equations and the calculus of variations [Book] / L. Elsgolts. - Mosscow : Mir Publishers, 1970. - 440 p. ; 22 cm.
All.
Differential equations.
Calculus of variations.
515.35
Differential equations and the calculus of variations [Book] / L. Elsgolts. - Mosscow : Mir Publishers, 1970. - 440 p. ; 22 cm.
All.
Differential equations.
Calculus of variations.
515.35