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@article{MZ_1989__202_1_174096, author = {Ja Kyung Koo}, title = {Quotients of {Theta} {Series} as {Rational} {Functions} of {J} and ?.}, journal = {Mathematische Zeitschrift}, pages = {367--374}, publisher = {mathdoc}, volume = {202}, number = {1}, year = {1989}, zbl = {0659.10023}, url = {http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174096/} }
Ja Kyung Koo. Quotients of Theta Series as Rational Functions of J and ?.. Mathematische Zeitschrift, Tome 202 (1989) no. 1, pp. 367-374. http://geodesic.mathdoc.fr/item/MZ_1989__202_1_174096/