Aixia Guo, Deqin Xiao and Xiangjun Zou. (2014). Computation Model on Image Segmentation Threshold of Litchi Cluster Based on Exploratory Analysis.
            <i>Journal of Fiber Bioengineering and Informatics</i>. <i>7</i> (3).
            441-452.
         doi:10.3993/jfbi09201413