@article{JGG_2009_13_2_JGG_2009_13_2_a1,
     author = {M. L�vicka and J. Vrsek },
     title = {On the {Representation} of {Dupin} {Cyclides} in {Lie} {Sphere} {Geometry} with {Applications}},
     journal = {Journal for geometry and graphics},
     pages = {145--162},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JGG_2009_13_2_JGG_2009_13_2_a1/}
}