TY - JOUR AU - Christopher Holloway AU - David Hill AU - Roger Dalke C2 - IEEE Transactions on Antennas and Propagation DA - 2000-09-01 00:09:00 LA - en M1 - 48 PB - IEEE Transactions on Antennas and Propagation PY - 2000 TI - Radio Wave Propagation Characteristics in Lossy Circular Waveguides such as Tunnels, Mine Shafts, and Boreholes ER -