TY  - JOUR
TI  - Meetings of the St.~Petersburg Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2004
SP  - 393
EP  - 398
VL  - 59
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2004_59_2_a17/
LA  - en
ID  - RM_2004_59_2_a17
ER  -