TY  - BOOK
AU  - Reissig,R.
AU  - Sansone,Glovanni
AU  - Conti,Roberto
TI  - Non-linear differential equations of higher order
PY  - 1974///
CY  - Leyden
PB  - Noordhoff International Publishing
KW  - Differential equations, Nonlinear
ER  -