TY  - BOOK
AU  - Fucik,S
TI  - Solvability of nonlinear equations & boundary value problems
T2  - Mathematics & its applications 4
SN  - 9027710775
U1  - 6.06 
PY  - 1980///
CY  - Dordrecht
PB  - D.Reidel 
ER  -