%0 Journal Article
%A Goo Ishikawa
%T Recognition Problem of Frontal Singularities
%J Journal of Singularities
%D 2020
%P 149-166
%V 21
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21i/
%R 10.5427/jsing.2020.21i
%F 10_5427_jsing_2020_21i