@misc{indiciaec46991fb8ebf,
  title = {Moving-Gradient Furnace With Constant-Temperature Cold Zone},
  author = {Gernert, Nelson J. and Shaubach, Robert M.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930000462},
  note = {Source identifier: 19930000462}
}