@misc{RM_2002_57_4_a18,
     title = {Meetings of the {St.~Petersburg} {Mathematical} {Society}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {827--832},
     year = {2002},
     volume = {57},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2002_57_4_a18/}
}