TY  - JOUR
TI  - Joint sessions of the Petrovskii Seminar and the Moscow Mathematical Society (nineteenth session, 20--24 January~1998)
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1998
SP  - 783
EP  - 860
VL  - 53
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1998_53_4_a4/
LA  - en
ID  - RM_1998_53_4_a4
ER  -