@misc{JDM_1980__5_144567,
     title = {XIX. {Poncelet's} {Trait\'e,} {Suppl\'ement.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {154--160},
     publisher = {mathdoc},
     volume = {5},
     year = {1980},
     url = {http://geodesic.mathdoc.fr/item/JDM_1980__5_144567/}
}