@misc{indiciae2db6a7c7e397,
  title = {Nongravitational forces},
  author = {Bourke, R. D. and Mc Reynolds, S. R. and Thuleen, K. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690023900},
  note = {Source identifier: 19690023900}
}