@misc{indiciae6948aa9619bd,
  title = {Electron spin resonance: spin labels.},
  author = {D Marsh},
  year = {1981},
  doi = {10.1007/978-3-642-81537-9\_2},
  url = {https://pubmed.ncbi.nlm.nih.gov/6262623/},
  note = {Source identifier: 6262623}
}