I.M Adamu, Dr A.Y Gital, and Prof S. Boukari. “A Hierarchical Framework for the Management of Virtualized Resources for Multi-Tier Services and Applications in Cloud Computing”. 2018. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, vol. 4, no. 7, Apr. 2020, pp. 1-7, doi:10.31695/IJASRE.2018.32756.