@misc{indiciae9aacbcb357b3,
  title = {Primary reference cell calibrations at SERI - History and methods},
  author = {Osterwald, C. R. and Emery, K. A. and Myers, D. R. and Hart, R. E.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910057343},
  note = {Source identifier: 19910057343}
}