%0 Journal Article %A V. S. Vladimirov %T On the spectrum of some pseudodifferential operators over the field of $p$-adic numbers %J Algebra i analiz %D 1990 %P 107-124 %V 2 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_1990_2_6_a6/ %G ru %F AA_1990_2_6_a6