@article{GDZPPN002322307, title = {On the Geometry of a Siegel Modular Threefold.}, journal = {Mathematische Annalen}, volume = {261}, year = {1982}, pages = {317-350}, zbl = {0473.14017}, url = {http://dml.mathdoc.fr/item/GDZPPN002322307} }
Geer, G. van der. On the Geometry of a Siegel Modular Threefold.. Mathematische Annalen, Tome 261 (1982) pp. 317-350. http://gdmltest.u-ga.fr/item/GDZPPN002322307/