TY  - BOOK
AU  - Gelfand,I.M.
AU  - Fomin,S.V.
TI  - Calculus of variations
AV  - QA315 .G45 1963
PY  - 1963///
CY  - New Jersey
PB  - Prentice - Hall
KW  -  Calculus of variations
N1  - Includes bibliographies and index; Mathematics, Physics & Statistics
ER  -