TY  - JOUR
AU  - N. A. Bokaev
TI  - The sum of closed $U$-sets for multiplicative orthonormal systems
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1985
SP  - 93
EP  - 96
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1985_6_a16/
LA  - ru
ID  - VMUMM_1985_6_a16
ER  -