@article{MAN_1983__265_163809,
     author = {William E. Lang},
     title = {On {Enriques} {Surfaces} in {Characteristic} p. {I.}},
     journal = {Mathematische Annalen},
     pages = {45--66},
     publisher = {mathdoc},
     volume = {265},
     year = {1983},
     zbl = {0575.14032},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163809/}
}