Hi, The paper
@ARTICLE{AlmironSilvaMM:2009, author = {Almiron, M. and Almeida, E. S. and Miranda, M.}, title = {The Reliability of Statistical Functions in Four Software Packages Freely used in Numerical Computation}, journal = {Brazilian Journal of Probability and Statistics}, year = {in press}, volume = {Special Issue on Statistical Image and Signal Processing}, url = {http://www.imstat.org/bjps/}} is freely available under the "Future Papers" link. It makes a nice comparison of the numerical properties of R, Ox, Octave and Python. Alejandro -- Alejandro C. Frery MaceiĆ³, AL - Brazil http://acfrery.googlepages.com http://www.researcherid.com/rid/A-8855-2008 Samuel Beckett - "Birth was the death of him." ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.