Challab, K., M. Darus, and F. Ghanim. “On a Certain Subclass of Meromorphic Functions Defined by a New Linear Differential Operator”. Journal of Mathematical and Fundamental Sciences, vol. 49, no. 3, Dec. 2017, pp. 269-82, doi:10.5614/j.math.fund.sci.2017.49.3.5.