@article{lvik2015the,
  title = {The global anthropogenic gallium system: Determinants of demand, supply, and efficiency improvement}
  author = {Løvik, Amund N., and Resrepo, Eliette, and Müller, Daniel B.},
  journal = {Environmental Science & Technology},
  doi = {10.1021/acs.est.5b00320},
  year = {2015}
}