TY - JOUR AU - J. Harnett AU - M. Tobar AU - A. Mann AU - E. Invanov AU - Jerzy Krupka AU - Richard Geyer C2 - IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control DA - 1999-07-01 00:07:00 LA - en M1 - 46 PB - IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control PY - 1999 TI - Frequency-Temperature Compensation in Ti3+ and Ti4+ Doped Sapphire Whispering Gallery Mode Resonators ER -