%0 Journal Article %A H.-P. Schroecker %T Singular Fregier Conics in Non-Euclidean Geometry %J Journal for geometry and graphics %D 2017 %P 201-208 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2017_21_2_JGG_2017_21_2_a5/ %F JGG_2017_21_2_JGG_2017_21_2_a5