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@article{IM_1990__99_1_143763, author = {D.L. Ulmer}, title = {On universal elliptic curves over {Igusa} curves.}, journal = {Inventiones mathematicae}, pages = {377--392}, publisher = {mathdoc}, volume = {99}, number = {1}, year = {1990}, zbl = {0705.14024}, url = {https://geodesic-test.mathdoc.fr/item/IM_1990__99_1_143763/} }
D.L. Ulmer. On universal elliptic curves over Igusa curves.. Inventiones mathematicae, Tome 99 (1990) no. 1, pp. 377-392. https://geodesic-test.mathdoc.fr/item/IM_1990__99_1_143763/