@article{Aitchison2002,
author = {Aitchison, J. and Greenacre, M.},
title= {Biplots of compositional data},
year = {2002},
doi = {10.1111/1467-9876.00275},
journal = {Journal of the Royal Statistical Society, Series C},
volume = {51},
number = {4},
pages = {375--392},
}