%0 Journal Article %A A. A. Gonchar %A G. I. Marchuk %A S. P. Novikov %T Vasilii Sergeevich Vladimirov (on his seventieth birthday) %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1993 %P 201-212 %V 48 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1993_48_1_a23/ %G en %F RM_1993_48_1_a23