• Davies, K., Ionospheric Radio Propagation, U.S. Govt. Print. Off., Washington, D. C., 1965.
  • Foppiano, A. J., and P. A. Bradley, Prediction of auroral absorption of high-frequency waves at oblique incidence, Telecommun. J., 50, 547560, 1983.
  • Foppiano, A. J., and P. A. Bradley, Morphology of background auroral absorption, J. Atmos. Terr. Phys., 47, 663674, 1985.
  • George, P. L., and P. A. Bradley, A new method of predicting the ionospheric absorption of high frequency waves at oblique incidence, Telecommun. J., 41, 307311, 1974.
  • Greenberg, E. M., A simulation of auroral absorption, Tech. Rep. TR2000-368, 86 pp., Dep. of Comput. Sci., Dartmouth Coll. Hanover, N. H., 2000.
  • LaBelle, J., and A. T. Weatherwax, Ground-based observations of LF/MF/HF radio waves of auroral origin, SPI Conf. Proc., 12, 223236, 1992.
  • Milan, S. E., T. B. Jones, M. Lester, E. M. Warrington, and G. D. Reeves, Substorm correlated absorption on a 3200 km trans-auroral HF propagation path, Ann. Geophys., 14, 182190, 1995.
  • Mingalev, V. S., M. I. Orova, V. N. Krivilev, and G. I. Mingaleva, Modeling the passage of short radio waves through calm and disturbed ionosphere, Geomagn. Aeron., 33, 408411, 1993.
  • Shepherd, S. G., J. LaBelle, C. W. Carlson, and G. Rostoker, Latitudinal dynamics of auroral roar emissions, J. Geophys. Res., 104, 17,21717,232, 1999.
  • Weatherwax, A. R., J. LaBelle, M. L. Trimpi, R. A. Treumann, J. Minnow, and C. Deehr, Statistical and case studies of radio emissions observed near 2fce and 3fce in the auroral zone, J. Geophys. Res., 100, 77457757, 1995.
  • Zhulina, E. M., A. G. Izraitel', P. V. Kishcha, and V. M. Lukashkin, Testing of models of regular and auroral absorptions on shortwave radio links, Geomagn. Aeron., 32, 707710, 1992.