@misc{indiciaeffce3ac45c97,
  title = {Operationally Efficient Propulsion System Study (OEPSS) data book. Volume 4: OEPSS design concepts},
  author = {Wong, George S. and Ziese, James M. and Farhangi, Shahram},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19920011024},
  note = {Source identifier: 19920011024}
}