@misc{indiciaea90c1f55cbec,
  title = {Hydrogen standard work at Goddard Space Flight Center},
  author = {Johnson, E. H. and Mc Gunigal, T. E. and Peters, H. E.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680016281},
  note = {Source identifier: 19680016281}
}