TY  - GEN
AU  - Griffiths,Phillip
TI  - Exterior differential systems and the calculus of variations
SN  - 3764331038
PY  - 1983///
CY  - BOSTON
PB  - BIRKHèAUSER
KW  - Calculus of variations
KW  - Exterior differential systems
N1  - Contine bibliogr. si index
ER  -