@misc{indiciaec2f27aee4968,
  title = {The Generation of Inseparable Fields.},
  author = {F K Schmidt and S Maclane},
  year = {1941},
  doi = {10.1073/pnas.27.12.583},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588509/},
  note = {Source identifier: 16588509}
}