TY  - BOOK
AU  - Reissig R, and others
TI  - Non-linear differential equations of higher order
SN  - 90 01 75270 5
U1  - B33,1, L4 
PY  - 1974///
CY  - Leyden
PB  - Noordhoff International         
KW  - Equations
N1  - Bibliography:  P 658-664
ER  -