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Shchesnovich, Valery S. The soliton perturbation theory based on the Riemann-Hilbert spectral problem. (English) Zbl 1080.35525 Chaos Solitons Fractals 5, No. 11, 2121-2133 (1995). MSC: 35Q51 34A55 35B20 35Q15 35Q58 PDFBibTeX XMLCite \textit{V. S. Shchesnovich}, Chaos Solitons Fractals 5, No. 11, 2121--2133 (1995; Zbl 1080.35525) Full Text: DOI