@misc{indiciaecf687cd5748d,
  title = {Performance Analysis of a Cost-Effective Electret Condenser Microphone Directional Array},
  author = {Humphreys, William M., Jr. and Gerhold, Carl H. and Zuckerwar, Allan J. and Herring, Gregory C. and Bartram, Scott M.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20030065663},
  note = {Source identifier: 20030065663}
}