TY  - JOUR
AU  - B. A. Kushner
TI  - Certain properties of quasi-numbers and operators from quasi-numbers into quasi-numbers
JO  - Doklady Akademii Nauk
PY  - 1966
SP  - 275
EP  - 277
VL  - 171
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1966_171_2_a8/
LA  - ru
ID  - DAN_1966_171_2_a8
ER  -