Abstract
This paper is to investigate the extended (2+1)-dimensional Konopelchenko—Dubrovsky equations, which can be applied to describing certain phenomena in the stratified shear flow, the internal and shallow-water waves, plasmas and other fields. Painlevé analysis is passed through via symbolic computation. Bilinear-form equations are constructed and soliton solutions are derived. Soliton solutions and interactions are illustrated. Bilinear-form Bäcklund transformation and a type of solutions are obtained.
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