%0 Journal Article %A Bertrand, D. %T Kummer theory on the product of an elliptic curve by the multiplicative group %J Glasgow mathematical journal %D 1981 %P 83-88 %V 22 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S001708950000450X/ %R 10.1017/S001708950000450X %F 10_1017_S001708950000450X