We highlight two minor errors in the paper. One refers to incorrect
comments on the sign of the relative magnitude changes in some of the
plots, the other is an error of 0.5 days in the Julian Date on some of
the light curves. Neither error has any bearing whatsoever on the
detection of variability or on the conclusions of the paper.
(Download full erratum below.)
Astronomy & Astrophysics, 2001, 374, 1071
[PDF version][online version]