@misc{indiciae6817aace0e5e,
  title = {Classification of four ordinary chondrites from Spain},
  author = {Mccoy, T. J. and Keil, Klaus and Casanova, I. and Wieler, R.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900051938},
  note = {Source identifier: 19900051938}
}