%0 Journal Article
%A C. Kimberling 
%T Yff Conics
%J Journal for geometry and graphics
%D 2008
%P 23-34
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2008_12_1_JGG_2008_12_1_a2/
%F JGG_2008_12_1_JGG_2008_12_1_a2