@article{MM2_1991__73_1_155671,
     author = {Ciro Ciliberto and Angelo Felico Lopez},
     title = {On the existence of components of the {Noether-Lefschetz} {Locus} with given codiemsnion.},
     journal = {Manuscripta mathematica},
     pages = {341--358},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1991},
     zbl = {0769.14018},
     url = {http://geodesic.mathdoc.fr/item/MM2_1991__73_1_155671/}
}