TY  - JOUR
AU  - S. M. Ponomarev
TI  - Semigroups of the classes $A^{n,\alpha}$ and the abstract Cauchy problem
JO  - Differencialʹnye uravneniâ
PY  - 1972
SP  - 2038
EP  - 2047
VL  - 8
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1972_8_11_a15/
LA  - ru
ID  - DE_1972_8_11_a15
ER  -