TY  - BOOK
AU  - 
ED  - Martini, R.
TI  - Geometrical approaches to differential equations
T2  - Lecture notes in mathematics
U1  - 510.8, 
PY  - 1980///
CY  - New York
PB  - Springer-Verlag
N1  - Scheveningen conference on differential equations(4th: 1979: Netherlands)
ER  -