@misc{indiciae9683e4adcdbe,
  title = {Emergency escape system Patent},
  author = {Billings, C. R. and Mcdaris, R. A. and Mcgough, J. T. and Neal, P. F. and Sweat, J. C.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710017591},
  note = {Source identifier: 19710017591}
}