@misc{indiciae58cb2f2d17e0,
  title = {Double embedding again.},
  author = {P C Engen},
  year = {1974},
  doi = {10.3109/10520297409117014},
  url = {https://pubmed.ncbi.nlm.nih.gov/4142139/},
  note = {Source identifier: 4142139}
}