AN, LY VAN. “THE FEKETE -SZEGO ̈ PROBLEM OF ANALYTIC FUNCTIONS BASED ON THE DEFERENtIAL OPERTOR AND CERTAIN SUBCLASSES”. JOURNAL OF ADVANCES IN MATHEMATICS 22 (August 17, 2023): 40–52. Accessed June 17, 2024. https://rajpub.com/index.php/jam/article/view/9499.