@misc{indiciaed7e180180446,
  title = {Low thrust orbit determination program},
  author = {Hong, P. E. and Shults, G. L. and Huling, K. R. and Ratliff, C. W.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730009135},
  note = {Source identifier: 19730009135}
}