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@article{AM2_1997__53_1-2_137677, author = {Mario Bonk}, title = {The addition formula for theta functions.}, journal = {Aequationes mathematicae}, pages = {54--72}, publisher = {mathdoc}, volume = {53}, number = {1-2}, year = {1997}, zbl = {0881.39016}, url = {http://geodesic.mathdoc.fr/item/AM2_1997__53_1-2_137677/} }
Mario Bonk. The addition formula for theta functions.. Aequationes mathematicae, Tome 53 (1997) no. 1-2, pp. 54-72. http://geodesic.mathdoc.fr/item/AM2_1997__53_1-2_137677/