@misc{indiciae31a37c9837f0,
  title = {Rotor systems research aircraft predesign study. Volume 2: Conceptual study report},
  author = {Schmidt, S. A. and Linden, A. W.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720025365},
  note = {Source identifier: 19720025365}
}