@article{IM2_1981_17_1_a7,
     author = {V. G. Sarkisov},
     title = {Birational automorphisms of conic bundles},
     journal = {Izvestiya. Mathematics},
     pages = {177--202},
     year = {1981},
     volume = {17},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1981_17_1_a7/}
}