@article{TM_1990_183_a12,
     author = {V. A. Iskovskikh},
     title = {A~simple proof of a~theorem of {Gizatullin}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {111--116},
     publisher = {mathdoc},
     volume = {183},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1990_183_a12/}
}