@misc{indiciaeaf7c2127e0b4,
  title = {Heat-transfer coefficients for hydrogen flowing through parallel hexagonal passages at surface temperatures to 2275 K},
  author = {Mattson, W. F. and Slaby, J. G.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690005256},
  note = {Source identifier: 19690005256}
}