@misc{indiciae22043353bd37,
  title = {Normalization and calculation of lanthanide element concentrations in environmental samples.},
  author = {B Markert and H Piehler and H Lieth and A Sugimae},
  year = {1989},
  doi = {10.1007/bf01211258},
  url = {https://pubmed.ncbi.nlm.nih.gov/2798771/},
  note = {Source identifier: 2798771}
}