@article {16109,
	title = {Barium Isotopes Track the Source of Dissolved Solids inUnconventional Shale Gas Produced Water},
	journal = {Environmental Science and Technology},
	volume = {54},
	number = {7},
	year = {2020},
	pages = {4275{\textendash}4285},
	url = {https://pubs.acs.org/doi/abs/10.1021/acs.est.0c00102},
	author = {Zachary G. Tieman and Brian W. Stewart and Rosemary C. Capo and Thai T. Phan and Christina L. Lopano and J. Alexandra Hakala}
}
