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Kishinev. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 29, No. 2, pp. 176–193, March–April, 1988.
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Taragan, D.I. Divisors of operator functions, holomorphic in a bounded, simply connected domain. Sib Math J 29, 300–315 (1988). https://doi.org/10.1007/BF00969743
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DOI: https://doi.org/10.1007/BF00969743