TY  - JOUR
TI  - Meetings of the Moscow Mathematical Society
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2000
SP  - 195
EP  - 199
VL  - 55
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2000_55_1_a17/
LA  - en
ID  - RM_2000_55_1_a17
ER  -