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@article{IM_1991__106_1_143942, author = {N.I. Shepherd-Barron}, title = {Geography for surfaces of general type in positive characteristic.}, journal = {Inventiones mathematicae}, pages = {263--274}, publisher = {mathdoc}, volume = {106}, number = {1}, year = {1991}, zbl = {0813.14025}, url = {http://geodesic.mathdoc.fr/item/IM_1991__106_1_143942/} }
N.I. Shepherd-Barron. Geography for surfaces of general type in positive characteristic.. Inventiones mathematicae, Tome 106 (1991) no. 1, pp. 263-274. http://geodesic.mathdoc.fr/item/IM_1991__106_1_143942/