@article{MZ_1991__206_1_174230,
     author = {J.H.M. Steenbrink and A.J. de Jong},
     title = {Picard numbers of surfaces in 3-dimensional weighted projective spaces.},
     journal = {Mathematische Zeitschrift},
     pages = {341--344},
     publisher = {mathdoc},
     volume = {206},
     number = {1},
     year = {1991},
     zbl = {0695.14016},
     url = {http://geodesic.mathdoc.fr/item/MZ_1991__206_1_174230/}
}