New directions: from biofuels to wood stoves: the modern and ancient air quality challenges in the megacity of São Paulo - Kumar, Prashant; Andrade, Maria de Fátima; Ynoue, Rita Yuri; Fornaro, Adalgiza; Freitas, Edmílson Dias de; Martins, Jorge; Martins, Leila D; Albuquerque, Taciana; Zhang, Yang; Morawska, Lidia (Atmospheric Environment, 2016)