@misc{RM_1983_38_5_a25,
     title = {Joint sessions of the {Petrovskii} {Seminar} and the {Moscow} {Mathematical} {Society}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {38},
     number = {5},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1983_38_5_a25/}
}