%0 Journal Article
%A Gaoyong Zhang
%T A positive solution to the Busemann-Petty problem in \(\mathbb{R}^4\)
%J Annals of mathematics
%D 1999
%V 149
%N 2
%U http://geodesic.mathdoc.fr/articles/10.2307/120974/
%R 10.2307/120974
%F 10_2307_120974