TY  - JOUR
AU  - C.-S. Barbat 
TI  - A Generalization of Ivory's Theorem
JO  - Journal for geometry and graphics
PY  - 2014
SP  - 7
EP  - 21
VL  - 18
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2014_18_1_JGG_2014_18_1_a1/
ID  - JGG_2014_18_1_JGG_2014_18_1_a1
ER  -