TY  - JOUR
TI  - Meetings of the St. Petersburg Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1996
VL  - 51
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/RM_1996_51_2_a26/
LA  - ru
ID  - RM_1996_51_2_a26
ER  -