Nabil, Tamer, and Ahmed Hussein Soliman. “On Ray’s Theorem for Weak Firmly Nonexpansive Mappings in Hilbert Spaces”. JOURNAL OF ADVANCES IN MATHEMATICS 12, no. 1 (March 30, 2016): 5858–5861. Accessed November 23, 2024. https://rajpub.com/index.php/jam/article/view/610.