%0 Journal Article %A B. Kh. Kirshtein %T A property of modular functions that are constructed by means of the discriminant %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1974 %V 29 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1974_29_5_a14/ %G ru %F RM_1974_29_5_a14