TY  - JOUR
AU  - Yu. I. Volkov
TI  - Certain relations that are connected with semigroups of operators
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1973
SP  - 23
EP  - 28
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1973_10_a2/
LA  - ru
ID  - IVM_1973_10_a2
ER  -