@misc{indiciae65a7a5d82fb7,
  title = {Harmonic-Balance Algorithm for Nonlinear Systems},
  author = {Mitchell, J. R. and Barron, O. L.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830000239},
  note = {Source identifier: 19830000239}
}