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@article{DAN_1989_308_3_a6, author = {M. Szyjewski}, title = {The fifth invariant of quadratic forms}, journal = {Doklady Akademii Nauk}, pages = {542--545}, publisher = {mathdoc}, volume = {308}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_308_3_a6/} }
M. Szyjewski. The fifth invariant of quadratic forms. Doklady Akademii Nauk, Tome 308 (1989) no. 3, pp. 542-545. http://geodesic.mathdoc.fr/item/DAN_1989_308_3_a6/