TY  - JOUR
AU  - Ráb, Miloš
TI  - On the existence of solutions of certain nonlinear equations occurring in the transformation theory of a linear second order differential equation with complex valued coefficients
JO  - Archivum mathematicum
PY  - 1970
SP  - 75
EP  - 78
VL  - 06
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1970__6_2_a0/
LA  - en
ID  - ARM_1970__6_2_a0
ER  -