Rapaka, S., R. Pullakura, and J. Mandelli. “A New Approach for Non-Ideal Iris Segmentation Using Fuzzy C-Means Clustering Based on Particle Swarm Optimization”. Asian Journal of Engineering and Applied Technology, vol. 7, no. 2, July 2018, pp. 42-45, doi:10.51983/ajeat-2018.7.2.1009.