A note on exact traveling solitary wave solutions of integrable Broer-Kaup (BK) equations in (2Â +Â 1)-dimensional spaces

In this letter, the method of variation of parameters and the homogeneous balance method are improved and then applied to find traveling solitary wave solutions of integrable Broer-Kaup (BK) equations in (2 + 1)-dimensional spaces. Our method can also be used to solve other nonlinear partial differential equations.