%0 Journal Article %T From the editors of volume~217 %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1998 %P 320 %V 221 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1998_221_a19/ %G ru %F TM_1998_221_a19