TY - JOUR
TI - Perturbed Korteweg-de Vries equations symmetry analysis and conservation laws
AU - Bai Yu-Shan
AU - Zhang Qi
JN - Thermal Science
PY - 2019
VL - 23
IS - 4
SP - 2281
EP - 2289
PT - Article
AB - Approximate symmetries for a coupled system of perturbed Korteweg-de Vries  equations with small parameters are constructed by applying the method of  approximate transformation groups. The optimal system of the presented  approximate symmetries and a few approximate invariant solutions to the  coupled system are obtained. Moreover, approximate conservation laws are  constructed by using the partial Lagrangian method.