%0 Journal Article %A I. V. Gaishun %A A. D. Egorov %A P. I. Sobolevskii %T Leonid Aleksandrovich Yanovich (to the 80th birthday) %J Trudy Instituta matematiki %D 2014 %P 3-5 %V 22 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2014_22_1_a0/ %G ru %F TIMB_2014_22_1_a0