@article{IM2_1987_29_3_a4,
     author = {S. Yu. Orevkov},
     title = {On three-sheeted polynomial mappings of~$\mathbf C^2$},
     journal = {Izvestiya. Mathematics},
     pages = {587--596},
     year = {1987},
     volume = {29},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_3_a4/}
}