TY  - BOOK
AU  - Matzeu,M & Vignoli,A (eds)
ED  - Vignoli, A
TI  - Topological nonlinear analysis II: degree, singularity & variations
T2  - PNLDE 27
SN  - 9780817638863
U1  - 6.01+6.08 
PY  - 1997///
CY  - Boston
PB  - Birkhauser-Verlag
ER  -