%0 Journal Article
%A Borwein, J.
%A O’Brien, R.
%T Tangent Cones and Convexity
%J Canadian mathematical bulletin
%D 1976
%P 257-261
%V 19
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1976-040-x/
%R 10.4153/CMB-1976-040-x
%F 10_4153_CMB_1976_040_x