@misc{indiciae35e42d9220bf,
  title = {Utilizing Expert Knowledge in Estimating Future STS Costs},
  author = {Fortner, David B. and Ruiz-Torres, Alex J.},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20110016646},
  note = {Source identifier: 20110016646}
}