TY  - BOOK
AU  - Fucik, Svatopluck.
AU  - Kufner, Alois.
TI  - Nonlinear differential equations
T2  - Studies in Applied Mechanics 2
SN  - 0444997717
U1  - 515.36 
PY  - 1980///
CY  - Amsterdam
PB  - Elsevier Scientific Publishing Company
ER  -