%0 Journal Article
%A M. V. Shamolin
%T Spatial topographical systems of Poincar\'e and comparison systems
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1997
%P 621-622
%V 52
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1997_52_3_a11/
%G en
%F RM_1997_52_3_a11