TY  - BOOK
AU  - Buttazzo, G..
TI  - Calculus of variations and partial differential equations : topics on geometrical evolution problems and degree theory / 
SN  - 3-540-64803-8
U1  - B32 
PY  - 1999///
CY  - New York : 
PB  - Springer-Verlag , 
KW  - Topological degree
ER  -