@misc{indiciae90c3cefd3c2d,
  title = {Mass spectrometry in structural and stereochemical problems. CXLV.},
  author = {Carpenter, W. and Djerassi, C. and Duffield, A. M.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680063472},
  note = {Source identifier: 19680063472}
}