@misc{indiciae7d14fecc34c2,
  title = {Surface Characterization Through Shape Oscillations of Drops in Microgravity and 1-g},
  author = {Robert E Apfel and R Glynn Holt and Yuren Tian and Tao Shi and Xiao-Yu Zheng},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950007806},
  note = {Source identifier: 19950007806}
}