@misc{indiciaec04e6369eb09,
  title = {Relaxation study of complex formation between monovalent cations and cyclic polyethers.},
  author = {P B Chock},
  year = {1972},
  doi = {10.1073/pnas.69.7.1939},
  url = {https://pubmed.ncbi.nlm.nih.gov/4505671/},
  note = {Source identifier: 4505671}
}