TY  - JOUR
AU  - H.-P. Schroecker 
TI  - Singular Fregier Conics in Non-Euclidean Geometry
JO  - Journal for geometry and graphics
PY  - 2017
SP  - 201
EP  - 208
VL  - 21
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2017_21_2_JGG_2017_21_2_a5/
ID  - JGG_2017_21_2_JGG_2017_21_2_a5
ER  -