@article{MM2_1988__61_4_155325,
     author = {E. Ballico and M. Beltrametti},
     title = {On {2-Spannedness} for the adjunction mapping.},
     journal = {Manuscripta mathematica},
     pages = {447--458},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1988},
     zbl = {0661.14005},
     url = {http://geodesic.mathdoc.fr/item/MM2_1988__61_4_155325/}
}