TY - JOUR AU - Jerzy Krupka AU - Kristof Derzakowski AU - M. Tobar AU - J. Hartnett AU - Richard Geyer C2 - Measurement Science & Technology DA - 1999-10-01 00:10:00 LA - en M1 - 10 PB - Measurement Science & Technology PY - 1999 TI - Complex Permittivity of Some Ultra-Low Loss Crystals at Cryogenic Temperature ER -