@misc{indiciae1ba372ac6994,
  title = {A reduced version of the NMC DERF 2 data set},
  author = {Schubert, Siegfried and Chang, Fong-Chiau and Lau, William K. M. and Kistler, Robert},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890014631},
  note = {Source identifier: 19890014631}
}