@article{IM2_1988_30_3_a3,
     author = {M. G. Zaidenberg},
     title = {Isotrivial families of curves on affine surfaces and characterization of the affine plane},
     journal = {Izvestiya. Mathematics},
     pages = {503--532},
     year = {1988},
     volume = {30},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1988_30_3_a3/}
}