Shanmuguam, T.N., M.P. Jeyaraman, and A. Singaravelu. “DIFFERENTIAL SANDWICH THEOREMS FOR SOME SUBCLASS OF ANALYTIC FUNCTIONS ASSOCIATED WITH LINEAR OPERATORS”. Journal of the Indonesian Mathematical Society 13, no. 1 (July 1, 2012): 39–50. Accessed May 4, 2024. https://jims-a.org/index.php/jimsa/article/view/73.