TY  - BOOK
AU  - Gelfand,I.M
AU  - Fomin,S.V
TI  - Calculus of Variations
SN  - 978-0-486-32258-2
U1  - 515.64 
PY  - 1993///
CY  - New York
PB  - Dover Publications,Inc
KW  - Mathematics
ER  -