@misc{indiciae93015fa5d024,
  title = {Two principles for absorption determinations using isotope-labelled nutrients.},
  author = {S A Svensson},
  year = {1965},
  doi = {10.1038/206732a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5832868/},
  note = {Source identifier: 5832868}
}