@misc{184301,
  author = {P Heyl},
  title = {Treasure of the Past: III. Gravitational Anisotropy in Crystals},
  year = {2000},
  number = {105 No. 4},
  month = {2000-08-01},
  publisher = {Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}