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Kampf, Arno P. and Sekania, Michael and Japaridze, George I. and Brune, Philipp (2003) Nature of the insulating phases in the half-filled ionic Hubbard model. Journal of physics. Condensed matter, 15. pp. 5895-5907. ISSN 1361-648X
Japaridze, George I. and Kampf, Arno P. and Sekania, Michael and Kakashvili, Paata and Brune, Philipp (2002) Eta-superconductivity in the Hubbard chain with pair hopping. Physical review / B, Condensed matter and materials physics, 65 (014518). ISSN 1098-0121 (Print)