@article{articlef852211e,
title   = {Improving source apportionment of urban aerosol using multi-isotopic gingerprints (MIF) and positive matrix factorization (PMF): cross-validation and new insights},
author = {Souto-Oliveira, Carlos Eduardo and Kamigauti, Leonardo Yoshiaki and Andrade, Maria de Fátima and Babinski, Marly},
year = {2021},
doi = {10.3389/fenvs.2021.623915},
journal   = {Frontiers in Environmental Science}
}