%0 Journal Article %T Sessions of the seminar “Actual problems of geometry and mechanics” %J Fundamentalʹnaâ i prikladnaâ matematika %D 2001 %P 301-316 %V 7 %N 1 %U http://geodesic.mathdoc.fr/item/FPM_2001_7_1_a21/ %G ru %F FPM_2001_7_1_a21