@article{GDZPPN002439042,
title = {Galois representations of octahedral type and 2-coverings of elliptic curves.},
journal = {Mathematische Zeitschrift},
volume = {207},
year = {1991},
pages = {395-408},
zbl = {0712.11035},
url = {http://dml.mathdoc.fr/item/GDZPPN002439042}
}
Bayer, Pilar; Frey, Gerhard. Galois representations of octahedral type and 2-coverings of elliptic curves.. Mathematische Zeitschrift, Tome 207 (1991) pp. 395-408. http://gdmltest.u-ga.fr/item/GDZPPN002439042/