@misc{indiciae8430f89ff10d,
  title = {Boiler for generating high quality vapor},
  author = {Gray, V. H. and Marto, P. J. and Joslyn, A. W.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720000135},
  note = {Source identifier: 19720000135}
}