@misc{indiciaefc53e1554767,
  title = {Mass spectrometry in structural and stereochemical problems. CLII.},
  author = {Djerassi, C. and Dubac, J. and Duffield, A. M. and Manuel, G. and Mazerolles, P.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680057987},
  note = {Source identifier: 19680057987}
}