TY  - JOUR
TI  - Meetings of the Leningrad Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1961
VL  - 16
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1961_16_3_a24/
LA  - ru
ID  - RM_1961_16_3_a24
ER  -