%0 Journal Article %A Jorge Morales %T The classification of pairs of binary quadratic forms %J Acta Arithmetica %D 1991 %P 105-121 %V 59 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-59-2-105-121/ %R 10.4064/aa-59-2-105-121 %G en %F 10_4064_aa_59_2_105_121