Calculus of variations [by] I. M. Gelfand [and] S. V. Fomin. Variat͡sionnoe ischislenie / English Gelʹfand, I. M. (Izrailʹ Moiseevich) Fomin, S. V. (Sergeĭ Vasilʹevich), author. Calculus of variations. QA315 .G417 517.4 GEC Bibliography: p. 227. Englewood Cliffs, N.J., Prentice-Hall 1963 1963 1963 Text vii, 232 p. eng engrus Selected Russian publications in the mathematical sciences Selected Russian publications in the mathematical sciences.