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@article{MAN_1991__291_1_164870, author = {Stephan Herfurtner}, title = {Elliptic surfaces with four singular fibres.}, journal = {Mathematische Annalen}, pages = {319--342}, publisher = {mathdoc}, volume = {291}, number = {1}, year = {1991}, zbl = {0762.14018}, url = {http://geodesic.mathdoc.fr/item/MAN_1991__291_1_164870/} }
Stephan Herfurtner. Elliptic surfaces with four singular fibres.. Mathematische Annalen, Tome 291 (1991) no. 1, pp. 319-342. http://geodesic.mathdoc.fr/item/MAN_1991__291_1_164870/