1. M.J. Ablowitz, P.A. Clarkson, Solitons, Nonlinear Evolution Equations and Inverse Scattering (Cambridge University Press, Cambridge, 1991)
2. M.J. Ablowitz, D.J. Kaup, A.C. Newell, H. Segur, The inverse scattering transform—Fourier analysis for nonlinear problems. Stud. Appl. Math. 53, 249 (1974)
3. A.V. Bäcklund, Über Curven und Flachentransformationen. Lund Univ. Arsskr. 10, 1 (1875)
4. G.N. Balanis, The plasma inverse problem. J. Math. Phys. 13, 1001 (1972)
5. P.L. Bhatnagar, Nonlinear Waves in One-Dimensional Dispersive Systems (Oxford University Press, London, 1979)