@misc{indiciae7bff811b4e37,
  title = {Extendable probe.},
  author = {P den Heijer},
  year = {1990},
  doi = {10.1002/ccd.1810200317},
  url = {https://pubmed.ncbi.nlm.nih.gov/2364425/},
  note = {Source identifier: 2364425}
}