@ARTICLE{Li:CSF2004b, author = {Shujun Li and G. \'{A}lvarez and Guanrong Chen}, title = {Breaking a chaos-based secure communication scheme designed by an improved modulation method}, journal = {Chaos, Solitons \& Fractals}, year = {2005}, volume = {25}, number = {1}, pages = {109-120}, doi = {10.1016/j.chaos.2004.09.077}, note = {preprint available online at \url{http://www.hooklee.com/pub.html}}, }