@article{MAN_1991__290_4_164812,
     author = {Kazuhiro Konno},
     title = {Algebraic surfaces of general type with c21 = 3pg - 6.},
     journal = {Mathematische Annalen},
     pages = {77--108},
     publisher = {mathdoc},
     volume = {290},
     number = {4},
     year = {1991},
     zbl = {0711.14021},
     url = {http://geodesic.mathdoc.fr/item/MAN_1991__290_4_164812/}
}