TY - JOUR AU - Harnett, J. AU - Tobar, M. AU - Mann, A. AU - Invanov, E. AU - Krupka, Jerzy AU - Geyer, Richard 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 -