TY  - JOUR
TI  - Meetings of the Moscow Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1971
VL  - 26
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1971_26_5_a7/
LA  - ru
ID  - RM_1971_26_5_a7
ER  -