Measuring the Environmental Efficiency and Technology Gap of PM2.5 in China's Ten City Groups: An Empirical Analysis Using the EBM Meta-Frontier Model.
Int J Environ Res Public Health. 2019 Feb 25;16(4):675. doi: 10.3390/ijerph16040675.
Int J Environ Res Public Health. 2019.
PMID: 30823601
Free PMC article.