Zhi-Bin Li Yin-Ping Liu RAEEM: A Maple package for finding a series of exact traveling wave solutions for nonlinear evolution equations. 191-201 2004 163 Computer Physics Communications 3 http://dx.doi.org/10.1016/j.cpc.2004.08.007 db/journals/cphysics/cphysics163.html#LiL04