Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AA_1990_2_1_a4, author = {N. A. Karpenko}, title = {Algebro-geometric invariants of quadratic forms}, journal = {Algebra i analiz}, pages = {141--162}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1990_2_1_a4/} }
N. A. Karpenko. Algebro-geometric invariants of quadratic forms. Algebra i analiz, Tome 2 (1990) no. 1, pp. 141-162. http://geodesic.mathdoc.fr/item/AA_1990_2_1_a4/