• Bannister, P. R., Quasi-static fields of dipole antennas at the Earth's surface, Radio Sci., 1, 13211330, 1966.
  • Bannister, P. R., Variations in extremely low frequency propagation parameters, J. Atmos. Terr. Phys., 37, 12031210, 1975.
  • Bannister, P. R., Summary of the Wisconsin Test Facility effective Earth conductivity measurements, Radio Sci., 11, 405411, 1976.
  • Bannister, P. R., The determination of representative ionospheric conductivity parameters for ELF propagation in the Earth-ionosphere waveguide, Radio Sci., 20, 977984, 1985.
  • Bannister, P. R., ELF propagation highlights, AGARD Conf. Proc., 529, 2-12-15, 1993.
  • Burrows, M. L., ELF Communications Antennas, Peter Peregrinus, London, 1978.
  • Clancy, T., The Hunt for Red October, Berkley Books, New York, 1990.
  • Fraser-Smith, A. C., R. A. Helliwell, The Stanford University ELF/VLF radiometer project: Measurement of the global distribution of ELF/VLF electromagnetic noise, Proceedings of the 1985 IEEE International Symposium on Electromagnetic Compatability, 305311Inst. of Electr. and Electron. Eng., New YorkAug., 1985.
  • Fraser-Smith, A. C., R. A. Helliwell, B. R. Fortnam, P. R. McGill, andC. C. Teague, A new global survey of ELF/VLF radio noise,AGARD Conf Proc.,420,4A-14A-9,Dec.1988.
  • Füllekrug, M., A. C. Fraser-Smith, Further evidence for a global correlation of the Earth-ionosphere cavity resonances, Geophys. Res. Lett., 23, 27732776, 1996.
  • Galejs, J., Terrestrial Propagation of Long Electromagnetic Waves, Pergamon, Tarrytown, N. Y., 1972.
  • Vagin, S. A., I. L. Vardanyants, A. A. Kovtun, E. L. Kokvina, O. N. Moiseyev, A. A. Savel'yev, N. I. Uspenskiy, Magnetotelluric sounding in the 10-3 to 104 second period interval in the Murmansk block of the Kola Peninsula and in central Karelia, Izv. Earth Phys., 21, 444450, 1985.
  • Velikhov, E. P., A. A. Zhamaletdinov, L. A. Sobchakov, A. V. Veshev, A. K. Sarayev, A. D. Tokarev, A. N. Shevtsov, A. V. Vasil'yev, A. G. Sonnikov, A. V. Yakovlev, Extra-low frequency sounding of the Earth's crust with a high-power antenna, Engl. Transl., Dokl. Acad. Sci. USSR, Earth Sci. Ser., 341, 1216, 1996.
  • Wait, J. R., K. P. Spies, Characteristics of the Earth-ionosphere waveguide for VLF radio waves, NBS Tech. Note U.S., 300, 100, 1964.
  • Wolkoff, E. A., W. A. Kraimer, Pattern measurements of U.S. Navy ELF transmitters, AGARD Conf. Proc., 529, 26-126-10, 1993.