B.Elizabeth Rani, Rajkumar N. Ingle, and P.Thirupathi Reddy. “On a Subclass Meromorphic Functions With Positive Coefficients”. Malaya Journal of Matematik, vol. 9, no. 01, Jan. 2021, pp. 850-4, https://www.malayajournal.org/index.php/mjm/article/view/1173.