@ARTICLE{Li:CNSNS2011b, author = {Chengqing Li and Shujun Li and Kwok-Tung Lo}, title = {Breaking a modified substitution-diffusion image cipher based on chaotic standard and logistic maps}, journal = {Communications in Nonlinear Science and Numerical Simulations}, year = {2011}, volume = {16}, number = {2}, pages = {837-843}, doi = {10.1016/j.cnsns.2010.05.008}, note = {preprint available online at \url{http://www.hooklee.com/pub.html}}, }