TY  - BOOK
AU  - Borwein Jonathan M
AU  - Zhu Qiji J
TI  - Techniques of variational analysis
SN  - 978-0-387-24298-9
U1  - 515.64 
PY  - 2005///
CY  - New York
PB  - Springer-Verlag
KW  - Calculus of variations
ER  -