TY  - JOUR
AU  - N. K. Nikol'skii
TI  - The stability of the unicellularity for analytic perturbations ot the class~$\Omega_0^+$
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1971
SP  - 89
EP  - 93
VL  - 22
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a7/
LA  - ru
ID  - ZNSL_1971_22_a7
ER  -