@article{hal-01991156,
author = {Vall\`es, Jean},
title = {Poncelet's porism and jumping conics},
journal = {HAL},
volume = {2001},
number = {0},
year = {2001},
language = {fr},
url = {http://dml.mathdoc.fr/item/hal-01991156}
}
Vallès, Jean. Poncelet's porism and jumping conics. HAL, Tome 2001 (2001) no. 0, . http://gdmltest.u-ga.fr/item/hal-01991156/