@ARTICLE{Li:CNSNS2009, author = {Gonzalo \'{A}lvarez and Shujun Li}, title = {Cryptanalyzing a nonlinear chaotic algorithm ({NCA}) for image encryption}, journal = {Communications in Nonlinear Science and Numerical Simulations}, year = {2009}, volume = {14}, number = {11}, pages = {3743-3749}, doi = {10.1016/j.cnsns.2009.02.033}, note = {preprint available online at \url{http://www.hooklee.com/pub.html}}, }