@article{JTNB_1990__2_1_155_0,
     author = {B. Kahn},
     title = {Quelques remarques sur le $u$-invariant},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {155--161},
     publisher = {Universit\'e Bordeaux I},
     volume = {2},
     number = {1},
     year = {1990},
     zbl = {0712.12002},
     mrnumber = {1061764},
     language = {fr},
     url = {https://jtnb.centre-mersenne.org/item/JTNB_1990__2_1_155_0/}
}