@article{MZ_1992__209_2_174351,
     author = {Sun Xia Talo},
     title = {Algebraic surfaces whose canonical image has a pencil of rational curves of degree two.},
     journal = {Mathematische Zeitschrift},
     pages = {67--74},
     year = {1992},
     volume = {209},
     number = {2},
     zbl = {0768.14019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1992__209_2_174351/}
}