@article{IM2_1989_32_3_a9,
     author = {A. E. Tumanov},
     title = {Finite-dimensionality of the group of $CR$~automorphisms of a~standard $CR$~manifold, and proper holomorphic mappings of {Siegel} domains},
     journal = {Izvestiya. Mathematics },
     pages = {655--662},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_32_3_a9/}
}