“…[8][9][10][11]. To date, many powerful methods have been proposed for this subject, such as the Bäcklund transformation method [12], Darboux transformation [13], Hirota bilinear method [14], improved F-expansion method [15], sine-Gordon method [16], projective Riccati equations method [17], G'/G-expansion method [18], (G'/G,1/G)-expansion method [19], improved (m + G'/G)-expansion method [20], improved G'/G 2 -expansion method [21], the first integral method [22], Generalized Exp-Function Method [23], Exp(−ϕ(ξ))-Expansion Method [24], and Lie symmetry method, which are connected to the wave transformations of equations that do not change the set of solutions [25], among others [26][27][28][29][30][31][32][33][34][35][36].…”