@article{CM_1990__76_3_399_0, author = {Kuwata, Masato}, title = {The field of definition of the Mordell-Weil group of an elliptic curve over a function field}, journal = {Compositio Mathematica}, publisher = {Kluwer Academic Publishers}, volume = {76}, number = {3}, year = {1990}, pages = {399-406}, zbl = {0731.14010}, mrnumber = {1080009}, language = {en}, url = {http://www.numdam.org/item/CM_1990__76_3_399_0} }

Kuwata, Masato. The field of definition of the Mordell-Weil group of an elliptic curve over a function field. Compositio Mathematica, Volume 76 (1990) no. 3, pp. 399-406. http://www.numdam.org/item/CM_1990__76_3_399_0/

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