TY  - JOUR
AU  - Guggenheimer, H.
TI  - On focal points and limit behavior of solutions of linear differential equations
JO  - Archivum mathematicum
PY  - 1978
SP  - 139
EP  - 143
VL  - 14
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1978__14_3_a1/
LA  - en
ID  - ARM_1978__14_3_a1
ER  -