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Inna Grusha and G.I. Japaridze Effective Hamiltonian for the half-filled spin-asymmetric ionic Hubbard chain with strong on-site repulsion"Low Dimensional Physics and Gauge Principles" (Eds.V.G.Gurzadyan, A.G.Sedrakyan), World Scientific pp. 146-157 , DOI:10.1142/9789814440349_0011 2013
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