Calculus of variations/
Gelfand, I. M.
Calculus of variations/ I. M. Gelfand and S. V. Fomin. - New York : Dover, 1963. - vii, 232 p. :
9780486322582
Calculus of variations.-
515.64 / Ca
Calculus of variations/ I. M. Gelfand and S. V. Fomin. - New York : Dover, 1963. - vii, 232 p. :
9780486322582
Calculus of variations.-
515.64 / Ca