TY  - JOUR
AU  - Ya. I. Rivkind
TI  - Letter to the editors of ``Uspekhi Mathematicheskikh Nauk''
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1960
VL  - 15
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1960_15_6_a21/
LA  - ru
ID  - RM_1960_15_6_a21
ER  -