@misc{indiciae173f6e04ccfe,
  title = {Improved Thermal Modulator for Gas Chromatography},
  author = {Hasselbrink, Ernest Frederick, Jr. and Hunt, Patrick J. and Sacks, Richard D.},
  year = {2008},
  url = {https://ntrs.nasa.gov/citations/20090020615},
  note = {Source identifier: 20090020615}
}