%0 Journal Article %A A. V. Aksenov %A K. L. Samarov %T Lorentz-invariant solutions of a pseudodifferential Schr\"odinger equation %J Differencialʹnye uravneniâ %D 1990 %P 268-271 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_2_a10/ %G ru %F DE_1990_26_2_a10