%0 Journal Article
%A V. I. Berdyshev
%T A Letter to the Editor
%J Trudy Instituta matematiki i mehaniki
%D 2015
%P 316
%V 21
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMM_2015_21_4_a29/
%G ru
%F TIMM_2015_21_4_a29