%0 Journal Article
%A G. A. Trunov
%T An estimate for a spectral relation for incomplete factorization of the form $S^*S$ of the difference approximation of the Laplace operator in the case of a quasiregular operator $S$
%J Matematičeskie zametki
%D 1990
%P 155-156
%V 47
%N 2
%U http://geodesic.mathdoc.fr/item/MZM_1990_47_2_a21/
%G ru
%F MZM_1990_47_2_a21