@misc{indiciaeb70b6346ddc4,
  title = {PARTICLE SAMPLING FROM NOCTILUCENT CLOUDS},
  author = {Hemenway, C. L. and Soberman, R. K. and Witt, G.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19630025387},
  note = {Source identifier: 19630025387}
}