@article{MAN_1963__149_161011,
     author = {F. OORT},
     title = {A {Note} on {Rationality} of {Divisor} {Classes} on {Algebraic} {Schemata} {(Separable} {Case).}},
     journal = {Mathematische Annalen},
     pages = {67--70},
     publisher = {mathdoc},
     volume = {149},
     year = {1963},
     zbl = {0161.18102},
     url = {http://geodesic.mathdoc.fr/item/MAN_1963__149_161011/}
}