@misc{indiciaed39bbfd8f905,
  title = {Ultrafiltration by a compacted clay membrane-II. Sodium ion exclusion at various ionic strengths},
  author = {B.B. Hanshaw and T.B. Coplen},
  year = {1973},
  doi = {10.1016/0016-7037(73)90106-3},
  url = {https://pubs.usgs.gov/publication/70010213},
  note = {Source identifier: 70010213}
}