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@article{JRAM_1988__389_153048, author = {Charles Helou}, title = {An explicit 2nth reciprocity law.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {64--89}, publisher = {mathdoc}, volume = {389}, year = {1988}, zbl = {0638.12008}, url = {http://geodesic.mathdoc.fr/item/JRAM_1988__389_153048/} }
Charles Helou. An explicit 2nth reciprocity law.. Journal für die reine und angewandte Mathematik, Tome 389 (1988), pp. 64-89. http://geodesic.mathdoc.fr/item/JRAM_1988__389_153048/