@misc{indiciae18fbb62169e6,
  title = {National geodetic satellite program, part 1},
  author = {Belgin, J. and Borrego, A. and Brooks, R. L. and Dempsey, D. J. and Fubara, N. M. and Guard, K. and Hillhouse, M. and Leitao, C. D. and Martin, C. F. and Mourad, G.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780003608},
  note = {Source identifier: 19780003608}
}