@article{MZ_1992__211_3_174428,
     author = {Hiroyuki Ito},
     title = {The {Modell-Weil} groups of unirational quasi-elliptic surfaces in characteristic 3.},
     journal = {Mathematische Zeitschrift},
     pages = {1--40},
     publisher = {mathdoc},
     volume = {211},
     number = {3},
     year = {1992},
     zbl = {0739.14011},
     url = {http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174428/}
}