@misc{indiciaeb16f64f22d26, title = {Embedded critical material flow: The case of niobium, the United States, and China}, author = {Dalton M. McCaffrey and Nedal T. Nassar and Simon M. Jowitt and Abraham J. Padilla and Laurence R. Bird}, year = {2023}, doi = {10.1016/j.resconrec.2022.106698}, url = {https://pubs.usgs.gov/publication/70238015}, note = {Source identifier: 70238015} }