1. Babelon, O., Bernard, D., Talon, M.: Introduction to Classical Integrable Systems. Cambridge University Press, Cambridge (2003)
2. Hirota, R.: The Direct Method in Soliton Theory. Cambridge University Press, Cambridge (2004)
3. Kumar, S., Mohan, B.: A study of multi-soliton solutions, breather, lumps, and their interactions for Kadomtsev–Petviashvili equation with variable time coeffcient using hirota method. Phys. Scr. 96, 125255 (2021)
4. Kumar, S., Mohan, B., Kumar, A.: Generalized fifth-order nonlinear evolution equation for the Sawada–Kotera, Lax, and Caudrey–Dodd–Gibbon equations in plasma physics: Painlevé analysis and multi-soliton solutions. Phys. Scr. 97, 035201 (2022)
5. Kumar, S., Mann, N.: Abundant closed-form solutions of the (3+1)-dimensional Vakhnenko–Parkes equation describing the dynamics of various solitary waves in ocean engineering. J. Ocean. Eng. Sci (2022)