@conference{116391,
  author = {J Faller},
  title = {Instrumentation for old gravity, ed. by O. Francis and T. van Dam},
  year = {2003},
  month = {2003-01-01},
  publisher = {IMG-2002 Workshop: Instrumentation and Metrology in Gravity , M{umlat}nsbach Castle, UK},
  language = {en},
}