@article{Pawlowsky-Glahn2006,
author = {Pawlowsky-Glahn, V. and Egozcue, J.J.},
title= {Compositional data and their analysis: An introduction},
year = {2006},
doi = {10.1144/GSL.SP.2006.264.01.01},
journal = {Geological Society},
volume = {264},
number = {1},
pages = {1--10},
}