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2. G. Margaritondo, in: J. Bok, G. Deutscher, D. Pavuna, S.A. Wolf (Eds.), The Gap Symmetry and Fluctuations in High-Tc Superconductors, NATO-ASI B371, Plenum–Kluwer, 1998, and the references therein
3. Electronic structure and photoemission studies of late transition-metal oxides — Mott insulators and high-temperature superconductors
4. M. Randeria, J.C. Campuzano, Varenna Lectures 1997, LANL report cond-mat/9709107, and the references therein
5. M. Onellion, in: J. Bok, G. Deutscher, D. Pavuna, S.A. Wolf (Eds.), The Gap Symmetry and Fluctuations in High-Tc Superconductors, NATO-ASI B371, Plenum–Kluwer, 1998, and the references therein