@article{article979dc066,
title   = {Source apportionment of fine particulate matter by positive matrix factorization in the metropolitan area of São Paulo, Brazil},
author = {Miranda, Regina Maura de and Andrade, Maria de Fatima and Ribeiro, Flavia Noronha Dutra and Francisco, Kelliton José Mendonça and Martínez, Pedro José Pérez},
year = {2018},
doi = {10.1016/j.jclepro.2018.08.100},
journal   = {Journal of Cleaner Production}
}