TY  - BOOK
AU  - Fox, Charles.
TI  - An introduction to the calculus of variations
SN  - 0486654990
U1  - 515.64 
PY  - 1987///
CY  - New York: 
PB  - Dover Publications Inc., 
KW  - Hamilton's principle
KW  - Math
KW  - Maxima
KW  - Variation
ER  -