Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1968__43_139369, author = {R. Narasimhan and K. Chandrasekharan}, title = {An {Approximate} {Reciprocity} {Formula} for {Some} {Exponential} {Sums.}}, journal = {Commentarii mathematici Helvetici}, pages = {296--310}, publisher = {mathdoc}, volume = {43}, year = {1968}, zbl = {0157.09303}, url = {http://geodesic.mathdoc.fr/item/CMH_1968__43_139369/} }
R. Narasimhan; K. Chandrasekharan. An Approximate Reciprocity Formula for Some Exponential Sums.. Commentarii mathematici Helvetici, Tome 43 (1968), pp. 296-310. http://geodesic.mathdoc.fr/item/CMH_1968__43_139369/