@article{GDZPPN002062429,
title = {A Poncelet theorem in space.},
journal = {Commentarii mathematici Helvetici},
volume = {52},
year = {1977},
pages = {145-160},
zbl = {0358.50009},
url = {http://dml.mathdoc.fr/item/GDZPPN002062429}
}
Harris, Joe; Griffiths, Phillip. A Poncelet theorem in space.. Commentarii mathematici Helvetici, Tome 52 (1977) pp. 145-160. http://gdmltest.u-ga.fr/item/GDZPPN002062429/