@misc{indiciaef23e2d01573d,
  title = {Gradient-Based Propeller Optimization with Acoustic Constraints},
  author = {Ingraham, Daniel and Gray, Justin and Lopes, Leonard V.},
  year = {2019},
  url = {https://ntrs.nasa.gov/citations/20190027611},
  note = {Source identifier: 20190027611}
}