Nonlocal Symmetries and Interaction Solutions of the (2+1)-dimensional   Higher Order Broer-Kaup System
  The (2+1)-dimensional higher-order Broer-Kaup (HBK) system is studied by nonlocal symmetry method and consistent tanh expansion (CTE) method in this paper. Some exact interaction solutions among different nonlinear excitations such as solitons, rational waves, periodic waves and corresponding images are explicitly given. 
Xin Xiangpeng
nlin.SI