@article{Pawlowsky-Glahn2002,
author = {Pawlowsky-Glahn, V. and Buccianti, A.},
title= {Visualization and modeling of subpopulations of compositional data: statistical methods illustrated by means of geochemical data from fumarolic fluids},
year = {2002},
doi = {10.1007/s005310100222},
volume = {91},
number = {2},
pages = {357--368},
}