TY - CONF AU - Richard Geyer C2 - Tech. Dig., IEEE MTT-S International Microwave Symposium, Denver, CO DA - 1997-06-01 LA - en PB - Tech. Dig., IEEE MTT-S International Microwave Symposium, Denver, CO PY - 1997 TI - Complex Permittivity Measurements of Extremely Low Loss Dielectric Materials Using Whispering Gallery Modes ER -