%0 Journal Article
%A Yongqiao Wang
%A Donghe Pei
%T Singularities for normal hypersurfaces of de Sitter timelike curves in Minkowski 4-space
%J Journal of Singularities
%D 2015
%P 207-214
%V 12
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2015.12o/
%R 10.5427/jsing.2015.12o
%F 10_5427_jsing_2015_12o