TY  - BOOK
AU  - Gelfand,I.M.
AU  - Fomin,S.V.
AU  - Silverman,Richard A.
TI  - Calculus of variations
SN  - 9780486322582
U1  - 517.4 
PY  - 2000///
CY  - New York
PB  - Dover Publications
KW  - Calculus of variations
N1  - Includes bibliographical references and index
ER  -