%0 Journal Article %A V. I. Arnol'd %A A. M. Vershik %A D. B. Fuchs %A Ya. M. Eliashberg %T Regional Mathematical School in Syktyvkar %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1976 %V 31 %N 4 %U http://geodesic.mathdoc.fr/item/RM_1976_31_4_a30/ %G ru %F RM_1976_31_4_a30