1. J.G. Bednorz and K.A. Müller, Z. Phys. B Condensed Matter 64, 189 (1986).
2. See, e.g., M. Tinkham, Introduction to Superconductivity, (McGraw-Hill, New York, 1996), Chaps. 8 and 9, and references therein.
3. For earlier references of the effects of thermal fluctuations of Cooper pairs in HTSC, see, e.g., M. Akinaga, in Studies of High Temperature Superconductors, edited by A.V. Narlikar (Nova Science, Commack, NY, 1991), Vol. 8, p. 297. For more recent references, mainly on the fluctuation effects on the heat capacity, see, e.g., A. Junod, ibid. (1996), Vol. 19, p. 1. See also, M. Ausloos, in Physics and Material Science of High Temperature Superconductors II, edited by R. Kossowsky, B. Raveau, D. Wohlleben and S.K. Patapis (Kluwer, Dordrecht, 1992), p. 775.
4. For a review and earlier references on the effects of thermal fluctuations of magnetic vortices in HTSC, see e.g., D. Feinberg, J. Phys. III France 4, 169 (1994).
5. D.S. Fisher, M.P.A. Fisher and D.A. Huse, Phys. Rev. B 43, 130 (1991).