%0 Journal Article %A Atsuhsi Moriwaki %T A criterion of openness of a family of nef line bundles. %J Manuscripta mathematica %D 1992 %P 327-332 %V 75 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1992__75_4_155727/ %F MM2_1992__75_4_155727