Pillarisetti A*, Gill M, Allen T, Madhavan S, Dhongade A, Ghorpade M, Roy S, Balakrishnan K, Juvekar S, Smith KR. 2019. The Pink Key: a low-cost stove use monitor to enable conditional cash transfers. Ecohealth 15 (4) : 768-776. doi.org/10.1007/s10393-018-1379-5