%0 Journal Article
%A V. P. Serebryakov
%T Quasiregularity conditions for a~``Pure imaginary'' singular differential operator of the third order
%J Matematičeskie zametki
%D 1997
%P 149-151
%V 61
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1997_61_1_a14/
%G ru
%F MZM_1997_61_1_a14