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2. Introduction to Multidimensional Integrable Equations: The Inverse Spectral Transform in 2+1 Dimensions;Konopelchenko,1992
3. Soliton in Multidimensional: Inverse Spectral Transform Method;Konopelchenko,1993
4. Hierarchies of coupled soliton equations;Hirota;J. Phys. Soc. Jpn.,1991
5. Direct Methods in Soliton Theory;Hirota,1992