TY  - BOOK
AU  - Mingarelli Angelo B
AU  -  Halvorsen S Gotskalk
TI  - Non-oscillation domains of differential equations with two parameters
T2  - Lecture notes in mathematics; 1338
U1  - B331, M8 
PY  - 1988///
CY  - Berlin
PB  - Springer-Verlag         
KW  -  Ordinary differential equations
KW  - Mathematics
ER  -