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Additional information
Odessa Institute of Naval Engineers, Odessa. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 21, No. 5, pp. 114–131, September–October, 1980.
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Shmul'yan, Y.L. Generalized fractional-linear transformations of operator balls. Sib Math J 21, 728–740 (1980). https://doi.org/10.1007/BF00973890
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DOI: https://doi.org/10.1007/BF00973890