@misc{indiciae57b39697951e,
  title = {Energy efficient engine: Flight propulsion system preliminary analysis and design},
  author = {Johnston, R. P. and Beitler, R. S. and Bobinger, R. O. and Broman, C. L. and Gravitt, R. D. and Heineke, H. and Holloway, P. R. and Klem, J. S. and Nash, D. O. and Ortiz, P.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810009532},
  note = {Source identifier: 19810009532}
}