Weibin Chen, Lai Zhou,  Xin Zhang and Hongbin Gu. (2015). A Novel Image Fusion Method Via Ratio Weighted and Condition Weighted Based on Shearlet Transform.
            <i>Journal of Fiber Bioengineering and Informatics</i>. <i>8</i> (3).
            625-633.
         doi:10.3993/jfbim00118