Khairi, M. H. H.; Ariffin, S. H. S.; Abdul Latiff, N. M.; Abdullah, A. S.; Hassan, M. K. A Review of Anomaly Detection Techniques and Distributed Denial of Service (DDoS) on Software Defined Network (SDN). Eng. Technol. Appl. Sci. Res. 2018, 8, 2724-2730.