@misc{indiciae4fb305cd24c0,
  title = {A laser satellite ranging system. I - Equipment description.},
  author = {Johnson, T. S. and Plotkin, H. H. and Spadin, P. L.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680040441},
  note = {Source identifier: 19680040441}
}