@misc{indiciae55585d4777a6,
  title = {Thermal Radiation Absorption in Rectangular-Groove Cavities},
  author = {Jonsson, V. K. and Sparrow, E. M.},
  year = {1961},
  url = {https://ntrs.nasa.gov/citations/19620000689},
  note = {Source identifier: 19620000689}
}