%0 Journal Article %A V. N. Tulovskiǐ %T Propagation of singularities of operators with characteristics of constant multiplicity %J Trudy Moskovskogo matematičeskogo obŝestva %D 1979 %P 113-134 %V 39 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1979_39_a3/ %G ru %F MMO_1979_39_a3