Si Gao, Xiaodong Zhu, Yuanning Liu, Fei He and Guang Huo. (2015). A Quality Assessment Method of Iris Image Based on Support Vector Machine.
            <i>Journal of Fiber Bioengineering and Informatics</i>. <i>8</i> (2).
            293-300.
         doi:10.3993/jfbim00114