%0 Journal Article %A Cecil, Thomas E. %A Ryan, Patrick J. %T Conformal Geometry and the Cyclides of Dupin %J Canadian journal of mathematics %D 1980 %P 767-782 %V 32 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-059-1/ %R 10.4153/CJM-1980-059-1 %F 10_4153_CJM_1980_059_1