Literature cited
V. K. Hayman, Multivalent Functions, Cambridge Tracts in Math. and Math. Phys., No. 48, Cambridge Univ. Press, Cambridge (1958).
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Additional information
Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova AN SSSR, Vol. 44, pp. 179–185, 1974.
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Shirokov, N.A. A generalization of a theorem of Ahlfors. J Math Sci 8, 781–787 (1977). https://doi.org/10.1007/BF01084046
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DOI: https://doi.org/10.1007/BF01084046