TY  - JOUR
AU  - Karim, Rahmi Ibrahim Ibrahim Abdel
TI  - On the exceptional case in systems of non-linear differential equations
JO  - Archivum mathematicum
PY  - 1971
SP  - 9
EP  - 20
VL  - 7
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/ARM_1971_7_1_a1/
LA  - en
ID  - ARM_1971_7_1_a1
ER  -