Al-Muttalibi, Rana, and Radhi M.A Ali. “Certain Types of Linear Operators on Probabilistic Hilbert Space”. Global Journal of Mathematical Analysis 3, no. 2 (May 24, 2015): 81–88. Accessed May 1, 2024. https://sciencepubco.com/index.php/GJMA/article/view/4664.