TY  - BOOK
AU  - Morse, Marston.
TI  - Variational analysis: critical extremals and sturmian extensions
T2  - Pure and Applied Mathematics
SN  - 0471617008
U1  - 515.64 
PY  - 1973///
CY  - New York
PB  - Wiley-Interscience Publications
ER  -