Wu, Qingtao, Mingchuan Zhang, Ruijuan Zheng, and Wangyang Wei. 2013. “A QoS-Satisfied Prediction Model for Cloud-Service Composition Based on Hidden Markov Model”. International Journal of Online and Biomedical Engineering (iJOE) 9 (3):pp. 67-71. https://doi.org/10.3991/ijoe.v9i3.2678.