@article{201705.0213,
	doi = {10.20944/preprints201705.0213.v2},
	url = {https://doi.org/10.20944/preprints201705.0213.v2},
	year = 2017,
	month = {June},
	publisher = {Preprints},
	author = {Minxi Wang and Yanan Liang and Wu Chen and Xin Li},
	title = {Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014},
	journal = {Preprints}
}