@article{CMH_1977__52_139686,
     author = {Joe Harris and Phillip Griffiths},
     title = {A {Poncelet} theorem in space.},
     journal = {Commentarii mathematici Helvetici},
     pages = {145--160},
     year = {1977},
     volume = {52},
     zbl = {0358.50009},
     url = {http://geodesic.mathdoc.fr/item/CMH_1977__52_139686/}
}