@article{10_4153_CJM_1980_059_1,
     author = {Cecil, Thomas E. and Ryan, Patrick J.},
     title = {Conformal {Geometry} and the {Cyclides} of {Dupin}},
     journal = {Canadian journal of mathematics},
     pages = {767--782},
     year = {1980},
     volume = {32},
     number = {4},
     doi = {10.4153/CJM-1980-059-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-059-1/}
}