Kumolalo, F.O., E.O. Olajubu, and E.R. Adagunodo. “A Charging Scheme for a VBR Multi-Service Network”. Ife Journal of Technology 17, no. 1 (May 1, 2008): 30–34. Accessed April 17, 2026. https://ijt.oauife.edu.ng/index.php/ijt/article/view/10.