@article{MM2_1992__75_4_155727,
     author = {Atsuhsi Moriwaki},
     title = {A criterion of openness of a family of nef line bundles.},
     journal = {Manuscripta mathematica},
     pages = {327--332},
     publisher = {mathdoc},
     volume = {75},
     number = {4},
     year = {1992},
     zbl = {0766.14004},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__75_4_155727/}
}