[1] Camassa R, Holm D D, An integrable shallow water equation with peaked solitons, Phys. Rev. Lett. ,71 (1993) ,1661-1664. 

[2] Constantin A, Existence of permanent and breaking waves for a shallow water equation: a geometric approach, Ann. Inst. Fourier (Grenoble),50 (2000), 321-362. 

[3] Constantin A, Escher J, Wave breaking for nonlinear nonlocal shallow water equations, Acta Mathematica, 181 (1998), 229-243. 

[4] Liu Zhengrong, Long Yao. Compacton-like wave and kink-like wave of GCH equation
[J]. Nonlinear Analysis: RealWorld Applications, 8(2007), 136-155. 

[5] Qian Tifei, Tang Minying, Peakons and periodic cusp waves in a generalized Camassa–Holm equation, Chaos, Solitons Fractals, 12 (2001),1347-1360. 

[6] Abdul-Majid Wazwaz. Peakons, kinks, compactons and solitary patterns solutions for a family of Camassa–Holm equations by using new hyperbolic schemes
[J]. Applied Mathematics and Computation, 182 (2006), 412-424.
 
[7] Lou Senyue, Ma Hongcai. Non-Lie symmetry groups of (2+1)-dimensional nonlinear systems obtained from a simple direct method
[J]. Journal of Physics A:Mathematical and General, 38(2005),129-137.
 
[8] Ma Hongcai. A simple method to generate Lie point symmetry groups of the (3+1)- dimensional Jimbo-Miwa equation
[J]. Chinese Physics Letters, 22(2005), 554-557. 

[9] Zheng Bin. New soliton solutions to 2+1 dimensional breaking soliton equation
[J]. Chinese Journal of Quantum Electronics(量子电子学报), 23(2006), 451-455.