TY  - BOOK
AU  - Hermann,Robert
TI  - Differential geometry and the calculus of variations
AV  - QA641 .H48
U1  - 516/.7 
PY  - 1968///
CY  - New York
PB  - Academic Press
KW  - Geometry, Differential
KW  - Calculus of variations
N1  - Bibliography: p. 431-433
ER  -