@misc{indiciaef13f4170214f,
  title = {Flexible rotor balancing by the exact point- speed influence coefficient method},
  author = {Anderson, W. J. and Badgley, R. H. and Tessarzik, J. M.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710059627},
  note = {Source identifier: 19710059627}
}