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@article{MAN_1985__272_164013, author = {Richard Elman and J\'on Kr. Arason and Bill Jacob}, title = {Graded {Witt} {Rings} of {Elementary} {Type.}}, journal = {Mathematische Annalen}, pages = {267--280}, publisher = {mathdoc}, volume = {272}, year = {1985}, zbl = {0545.10013}, url = {http://geodesic.mathdoc.fr/item/MAN_1985__272_164013/} }
Richard Elman; Jón Kr. Arason; Bill Jacob. Graded Witt Rings of Elementary Type.. Mathematische Annalen, Tome 272 (1985), pp. 267-280. http://geodesic.mathdoc.fr/item/MAN_1985__272_164013/