@article{CRMATH_2003__336_1_7_0,
     author = {Simon, Denis},
     title = {La classe invariante d'une forme binaire},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {7--10},
     publisher = {Elsevier},
     volume = {336},
     number = {1},
     year = {2003},
     doi = {10.1016/S1631-073X(02)00021-3},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/S1631-073X(02)00021-3/}
}