@misc{indiciae8661c6c99273,
  title = {[An ion exchange method to determine free metal concentrations, adapted for use in biological fluids: methods and determination of (Mg2+)].},
  author = {W Achilles and B Scheidt and H Hoppe and G A Cumme},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/17989/},
  note = {Source identifier: 17989}
}