%0 Journal Article
%A Ricardo Uribe-Vargas
%T On Projective Umbilics: a Geometric Invariant and an Index
%J Journal of Singularities
%D 2018
%P 81-90
%V 17
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2018.17e/
%R 10.5427/jsing.2018.17e
%F 10_5427_jsing_2018_17e