JOSHI, Sayali, Santosh B. JOSHI, and Ram MOHAPATRA. 2016. “On a Subclass of Analytic Functions for Operator on a Hilbert Space”. Studia Universitatis Babeș-Bolyai Mathematica 61 (2):147-53. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5542.