@article{IM2_1970_4_4_a5,
     author = {M. Kh. Gizatullin},
     title = {On affine surfaces that can be completed by a nonsingular rational
},
     journal = {Izvestiya. Mathematics },
     pages = {787--810},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_4_a5/}
}