@article{MS2_1986__59_166987,
     author = {Elvira Laura Livorni},
     title = {Classification of algebraic surfaces with sectional genus less than or equal to six. {III:} {Ruled} surfaces with {dim...(X)=2.}},
     journal = {Mathematica Scandinavica},
     pages = {9--29},
     publisher = {mathdoc},
     volume = {59},
     year = {1986},
     zbl = {0663.14024},
     url = {http://geodesic.mathdoc.fr/item/MS2_1986__59_166987/}
}