@article {28527,
	title = {The nonlinear response of fine particulate matter pollution to ammonia emission reductions in North China},
	journal = {Environmental Research Letters},
	volume = {16},
	year = {2021},
	pages = {034014},
	publisher = {IOP Publishing},
	isbn = {1748-9326},
	author = {Liu, Zehui and Zhou, Mi and Chen, Youfan and Chen, Dan and Pan, Yuepeng and Tao Song and Ji, Dongsheng and Chen, Qi and Lin Zhang}
}
