%0 Journal Article %A Vasile Brinzanescu %T Neron-Severi group for nonalgebraic elliptic surfaces I. Elliptic bundle case. %J Manuscripta mathematica %D 1993 %P 187-196 %V 79 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1993__79_1_155834/ %F MM2_1993__79_1_155834