The integrable chain of R II type by Spiridonov–Zhedanov is studied by using the bilinear method. Bilinear equations of the system are derived by applying appropriate-dependent variable transformations. A particular solution on a semi-infinite lattice is explicitly given in terms of the Casorati-type determinants. It is shown that the R II chain and the Toda-type integrable systems are connected by Bäcklund transformations.
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Mukaihira et al. (2006) studied this question.
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