%0 Journal Article %A YoungJu Choie %A L. Alayne Parson %T Rational period functions and indefinite binary quadratics forms. I. %J Mathematische Annalen %D 1990 %P 697-708 %V 286 %N 1-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1990__286_1-3_164659/ %F MAN_1990__286_1-3_164659