@misc{indiciae7f3014bb88f8,
  title = {Charts for estimating downwash behind rectangular, trapezoidal, and triangular wings at supersonic speeds},
  author = {Haefeli, Rudolph C and Mirels, Harold and Cummings, John L},
  year = {1950},
  url = {https://ntrs.nasa.gov/citations/19930082761},
  note = {Source identifier: 19930082761}
}