%0 Journal Article
%A Frey, Gerhard
%T A remark about isogenies of elliptic curves over quadratic fields
%J Compositio Mathematica
%D 1986
%P 133-134
%V 58
%N 1
%I Martinus Nijhoff Publishers
%U http://www.numdam.org/item/CM_1986__58_1_133_0/
%G en
%F CM_1986__58_1_133_0