@misc{indiciae7f0e5234fd8d,
  title = {Particle distribution functions in modulation theory},
  author = {Forman, M. A. and Fisk, L. A. and Axford, W. I.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740047442},
  note = {Source identifier: 19740047442}
}