Okelo, Benard, and Lamech Otae. “On Geometrical Aspects of Various Operators and Their Orthogonality in Complex Normed Spaces”. International Journal of Open Problems in Computer Science and Mathematics 19, no. 1 (November 30, 2025): 53–72. Accessed June 21, 2026. https://ijopcm.icsrs.uk/index.php/journal/article/view/52.