@misc{RM_2009_64_3_a8,
     title = {Meetings of the {St.~Petersburg} {Mathematical} {Society}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {577--582},
     publisher = {mathdoc},
     volume = {64},
     number = {3},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2009_64_3_a8/}
}