1974 International Conference on Submillimeter Waves and Their Applications Submillimeter Waves and Their Applications, 1974. ICSWA 1974. International Conference on. :75-77 Jun, 1974
1987 Twelth International Conference on Infrared and Millimeter Waves Infrared and Millimeter Waves, 1987. IMMW87IMMART 1987. Twelth International Conference on. :379-380 Dec, 1987
1983 Eighth International Conference on Infrared and Millimeter Waves Infrared and Millimeter Waves, 1983. IMMW83IMMART 1983. Eighth International Conference on. :1-2 Dec, 1983