%0 Journal Article
%A Sorin V. Sabau
%T The Co-Points of Rays are Cut Points of Upper Level Sets for Busemann Functions
%J Symmetry, integrability and geometry: methods and applications
%D 2016
%V 12
%U http://geodesic.mathdoc.fr/item/SIGMA_2016_12_a35/
%G en
%F SIGMA_2016_12_a35