Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1995_5_a1, author = {N. Bokan and P. B. Gil'keǐ and U. Simon}, title = {Local affine invariants of second order}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {11--15}, publisher = {mathdoc}, number = {5}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1995_5_a1/} }
N. Bokan; P. B. Gil'keǐ; U. Simon. Local affine invariants of second order. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1995), pp. 11-15. http://geodesic.mathdoc.fr/item/IVM_1995_5_a1/