TY  - JOUR
TI  - Meetings of the St.~Petersburg Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2005
SP  - 385
EP  - 388
VL  - 60
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2005_60_2_a22/
LA  - en
ID  - RM_2005_60_2_a22
ER  -