M. Danlami, S. Najwa Ramli, N. Izzah Syahira Jemain, Z. Pindar, S. Jamel, and M. Mat Deris, “An Efficient Iris Image Thresholding based on Binarization Threshold in Black Hole Search Method”, IJET, vol. 7, no. 4.31, pp. 34–39, Dec. 2018, doi: 10.14419/ijet.v7i4.31.23337.