@misc{indiciaec13b61a60af9,
  title = {Superalloy heat shield technology for the space shuttle},
  author = {Ratay, R. T. and Wolter, W. A.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700033671},
  note = {Source identifier: 19700033671}
}