@article{202106.0408,
	doi = {},
	url = {https://doi.org/},
	year = 2021,
	month = {June},
	publisher = {Preprints},
	author = {Dehu Qv and Xiangjie Duan and Jijin Wang and Caiqin Hou and Gang Wang and fengxi zhou and Shaoyong Li},
	title = {Issues and Potential Solutions to the Clean Heating Project in Rural Gansu},
	journal = {Preprints}
}