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