In this directory is a PDF of:
Felsenstein, J. 2001. Taking variation of evolutionary rates between
sites into account in inferring phylogenies. Journal of
Molecular Evolution 53: 447-455.
The file is
rates.pdf PDF of the submitted manuscript
One erratum: the rates and probabilities in Table 3 are computed, not for
α = 1 as stated, but for α = 2.
Please note carefully that these papers, as published in the journals, are copyright to the publishers of those journals.