%0 Journal Article %A R. Clement Fernández %A J. M. Echarri Hernández %A E. J. Gómez Ayala %T A geometric proof of Kummer's reciprocity law for seventh powers %J Acta Arithmetica %D 2011 %P 299-318 %V 146 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa146-4-1/ %R 10.4064/aa146-4-1 %G en %F 10_4064_aa146_4_1