@misc{indiciae9107d9ce09ad,
  title = {Gravitation research},
  author = {Weiss, R. and Muehlner, D. J. and Benford, R. L. and Owens, D. K. and Pierre, N. A. and Rosenbluh, M.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720018652},
  note = {Source identifier: 19720018652}
}