@misc{indiciae8191aca3824f,
  title = {Covariant harmonic oscillators and coupled harmonic oscillators},
  author = {Han, Daesoo and Kim, Young S. and Noz, Marilyn E.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950016575},
  note = {Source identifier: 19950016575}
}