%0 Journal Article
%A V. I. Berdyshev
%T An observer and a pair of objects enveloping a set of convex regions
%J Trudy Instituta matematiki i mehaniki
%D 2022
%P 64-70
%V 28
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMM_2022_28_4_a5/
%G ru
%F TIMM_2022_28_4_a5