TY - JOUR AU - Ja Kyung Koo TI - Quotients of Theta Series as Rational Functions of J and ?. JO - Mathematische Zeitschrift PY - 1989 SP - 367 EP - 374 VL - 202 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174096/ ID - MZ_1989__202_1_174096 ER -