@article{Martín--Fernández2003,
author = {Martín--Fernández, J.A. and Barceló-Vidal, C. and Pawlowsky-Glahn, V.},
title= {Dealing with zeros and missing values in compositional data sets using nonparametric imputation},
year = {2003},
doi = {10.1023/A:1023866030544},
journal = {Mathematical Geology},
volume = {35},
number = {3},
pages = {253--278},
}