CYPRIAN, O. S., ANDREW MASIBAYI, and N. B. OKELO. “ON THE JOINT ESSENTIAL MAXIMAL NUMERICAL RANGES”. IJRDO -JOURNAL OF MATHEMATICS 1, no. 1 (May 31, 2015): 29-33. Accessed November 27, 2024. http://13.234.104.160/index.php/m/article/view/2400.