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Spin exchange and superconductivity in a t-J'-V model for two-dimensional quarter-filled systemsGRECO, Andrés; MERINO, Jaime; FOUSSATS, Adriana et al.Physical review B. Condensed matter and materials physics. 2005, Vol 71, Num 14, pp 144502.1-144502.8, issn 1098-0121Article