Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1994__44_5_a9, author = {Kuba, Gerald}, title = {The two parameter ellipse problem}, journal = {Mathematica slovaca}, pages = {585--593}, publisher = {mathdoc}, volume = {44}, number = {5}, year = {1994}, mrnumber = {1338431}, zbl = {0830.11036}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1994__44_5_a9/} }
Kuba, Gerald. The two parameter ellipse problem. Mathematica slovaca, Tome 44 (1994) no. 5, pp. 585-593. http://geodesic.mathdoc.fr/item/MASLO_1994__44_5_a9/