In this paper, we mainly use Hirota’s bilinear method and B(?)cklund transformation to seek new Wronskian solutions of three soliton equations with self-consistent sources. To start with mixed KP equation with self-consistent sources,we derived two kinds of the solution from a seed solution :(i) a solution with the same number of solitons but with different phase;(ii) a solution with the number of solitons increased by one. Next, we respectively derived new solutions of 2D Toda lattice equation with self-consistent sources and Leznov equation with self-consistent sources. |