%0 Journal Article
%A Goo Ishikawa
%A Yoshinori Machida,
%A Masatomo Takahashi
%T Asymmetry in singularities of tangent surfaces in contact-cone Legendre-null duality
%J Journal of Singularities
%D 2011
%P 126-143
%V 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2011.3h/
%R 10.5427/jsing.2011.3h
%F 10_5427_jsing_2011_3h