@misc{indiciaebf69254c77f6,
  title = {Standard reference water samples for rare earth element determinations},
  author = {P. L. Verplanck and Ronald C. Antweiler and D. Kirk Nordstrom and Howard E. Taylor},
  year = {2001},
  doi = {10.1016/s0883-2927(00)00030-5},
  url = {https://pubs.usgs.gov/publication/70023771},
  note = {Source identifier: 70023771}
}