@article{article464b9a40,
title   = {Weekend/weekday differences in concentrations of ozone, NOX, and non-methane hydrocarbon in the Metropolitan Area of São Paulo},
author = {Silva Júnior, Rosiberto Salustiano da and Oliveira, Marcio Gledson Lopes de and Andrade, Maria de Fátima},
year = {2009},
doi = {10.1590/s0102-77862009000100010},
journal   = {Revista Brasileira de Meteorologia}
}