%0 Journal Article %T I.\,V.~Gaishun (on the occasion of his 60-th birthday) %J Trudy Instituta matematiki %D 2006 %P 115-117 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2006_14_2_a14/ %G ru %F TIMB_2006_14_2_a14