1. A new approach to null correlations of proportions;Aitchison;J. Math. Geol.,1981
2. The statistical analysis of compositional data;Aitchison;J. Roy. Stat. Soc.,1982
3. The Statistical Analysis of Compositional Data;Aitchison,1986
4. CODA: A Microcomputer Package for the Statistical Analysis of Compositional Data;Aitchison,1986
5. Methods for assessing multivariate normality;Andrews,1973