Superconductivity and incommensurate spin fluctuations in a generalized t-J model for the cupratesC. D. Batista, L. O. Manuel, H. A. Ceccatto and A. A. AligiaEurophys. Lett., 38 2 (1997) 147-152DOI: https://doi.org/10.1209/epl/i1997-00216-4