Shyam K. Bajpai, "Spiral like integral operators", International Journal of Mathematics and Mathematical Sciences, vol. 4, Article ID 731908, 15 pages, 1981. https://doi.org/10.1155/S0161171281000203
Spiral like integral operators
In this paper we investigate the Robertson-Libera integral operators for the class of spiral like univalent and analytic functions. We find that special types of transformations preserve the class property. Our results generalize or sharpen the results recently obtained by Miller et al  and by Causey and White .
Copyright © 1981 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.