1. M. Born and E. Wolf,Principles of Optics(Pergamon Press, New York, 1959), p. 662.
2. C. H. Papas, “A Note Concerning a Gyroelectric Medium,” Antenna Laboratory Report No. 4, California Institute of Technology, Pasadena, California (1954).
3. D. A. Watkins,Topics in Electromagnetic Theory(John Wiley & Sons, Inc., New York, 1958), p. 94.
4. H. H. Kuehl, “Electromagnetic Radiation from a Dipole in an Anisotropic Plasma,” USCEC Rept. 79-203, University of Southern California, Los Angeles, California (1961).