@article{MAN_1985__272_164015,
     author = {Kenji Ueno and Toshiyuki Katsura},
     title = {On {Elliptic} {Surfaces} in {Characteristic} p.},
     journal = {Mathematische Annalen},
     pages = {291--330},
     publisher = {mathdoc},
     volume = {272},
     year = {1985},
     zbl = {0553.14019},
     url = {http://geodesic.mathdoc.fr/item/MAN_1985__272_164015/}
}