@article{article,
  author = {Jerzy Krupka and Kristof Derzakowski and M. Tobar and J. Hartnett and Richard Geyer},
  title = {Complex Permittivity of Some Ultra-Low Loss Crystals at Cryogenic Temperature},
  year = {1999},
  number = {10},
  month = {1999-10-01 00:10:00},
  publisher = {Measurement Science \& Technology},
  language = {en},
}