@misc{indiciaeca12af3c7cd1,
  title = {Muffling Hammer Blows In A Workshop},
  author = {Thiele, Alfred W. and Gilbert, Jeffrey L. and Gutow, David A.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19940000029},
  note = {Source identifier: 19940000029}
}