@article{CM_1986__58_1_133_0,
author = {Frey, Gerhard},
title = {A remark about isogenies of elliptic curves over quadratic fields},
journal = {Compositio Mathematica},
volume = {60},
year = {1986},
pages = {133-134},
mrnumber = {834050},
zbl = {0596.14021},
language = {en},
url = {http://dml.mathdoc.fr/item/CM_1986__58_1_133_0}
}
Frey, Gerhard. A remark about isogenies of elliptic curves over quadratic fields. Compositio Mathematica, Tome 60 (1986) pp. 133-134. http://gdmltest.u-ga.fr/item/CM_1986__58_1_133_0/
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