@misc{indiciaecce20af625a2,
  title = {Accelerated chromatographic method for determination of hydroxyproline.},
  author = {Callahan, P. X. and Shepard, J. A. and Ellis, S.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730028798},
  note = {Source identifier: 19730028798}
}