TY  - JOUR
AU  - R. S. Levitin
TI  - The uniqueness of $O$-curves in a normal domain of the second kind
JO  - Differencialʹnye uravneniâ
PY  - 1973
SP  - 437
EP  - 448
VL  - 9
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1973_9_3_a4/
LA  - ru
ID  - DE_1973_9_3_a4
ER  -