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This research was supported in part by a grant from the Arts Faculty Fund, University College Cork
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Twomey, J.B. Absolute Cesaro summability and absolute convergence for starlike univalent functions. Math Z 195, 129–141 (1987). https://doi.org/10.1007/BF01161607
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DOI: https://doi.org/10.1007/BF01161607