@misc{indiciae4a1a1033ed21,
  title = {Sampling problems},
  author = {Flueck, J. A. and Crane, R. F. and Laughlin, C. R. and Bell, T. L. and Meiten, J. G. and Ruprecht, E. and Short, D. R. and Theon, J. S. and Vogel, J. L.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830017000},
  note = {Source identifier: 19830017000}
}