@techreport{Shepherd-1989-3107,
  author = {Shepherd, K and Hubbard, H},
  title = {Environmental Noise Characteristics of the MOD5-B (3.2 MW) Wind Turbine Generator},
  institution = {National Aeronautics and Space Administration (NASA)},
  year = {1989},
  month = {mar},
  url = {http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890013901.pdf},
  keywords = {Wind Energy, Land-Based Wind},
}