TY  - JOUR
AU  - Ráb, Miloš
TI  - Second order differential equations with complex-valued coefficients
JO  - Czechoslovak Mathematical Journal
PY  - 1972
SP  - 590
EP  - 599
VL  - 22
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1972.101128/
DO  - 10.21136/CMJ.1972.101128
LA  - en
ID  - 10_21136_CMJ_1972_101128
ER  -