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@article{JRAM_1980__315_152233, author = {Ronald J. Evans}, title = {The 2r-th power character of 2.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {174--189}, publisher = {mathdoc}, volume = {315}, year = {1980}, zbl = {0419.10003}, url = {http://geodesic.mathdoc.fr/item/JRAM_1980__315_152233/} }
Ronald J. Evans. The 2r-th power character of 2.. Journal für die reine und angewandte Mathematik, Tome 315 (1980), pp. 174-189. http://geodesic.mathdoc.fr/item/JRAM_1980__315_152233/