%0 Journal Article
%A A. I. Aptekarev
%A Yu. G. Rykov
%T Emergence of a Hierarchy of Singularities in Zero-Pressure Media. Two-Dimensional Case
%J Matematičeskie zametki
%D 2022
%P 486-499
%V 112
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2022_112_4_a1/
%G ru
%F MZM_2022_112_4_a1