A. Purvis Andrew Rambaut Comparative analysis by independent contrasts (CAIC): an Apple Macintosh application for analysing comparative data. 247-251 1995 11 Computer Applications in the Biosciences 3 db/journals/bioinformatics/bioinformatics11.html#PurvisR95 http://dx.doi.org/10.1093/bioinformatics/11.3.247