In regard to Thomas Lux's comment, I would like
to point out our paper which examines the question of existence
of "log-periodic" oscillations from a empirical viewpoint,
published in Europhysics Letters in 1999:
Laurent Laloux, Marc Potters, Rama Cont,
Jean-Pierre Aguilar and Jean-Philippe Bouchaud:
Are financial crashes predictable?
Europhysics Letters, Vol. 45, No. 1, pp. 1-5 (1999).
It is downloadable from:
http://www.eleves.ens.fr:8080/home/cont/crash.pdf (PDF)
http://www.eleves.ens.fr:8080/home/cont/papers.html (Postscript)
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Rama CONT
Centre de Mathematiques Appliquees - CNRS UMR 7641
Ecole Polytechnique
F-91128 Palaiseau, France.
Fax: 00 33 1 69 33 30 11.
E-mail: [log in to unmask]
WWW: http://www.cmap.polytechnique.fr/~rama/
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