When the constitutive parameters of a linear, homogeneous, bianisotropic me
dium are arranged in a certain way as a 6 X 6 dyadic, it is shown that the
eigenvectors of that dyadic may yield admissible Beltrami field phasors who
se wavenumbers are directly proportional to the corresponding eigenvalues.
(C) 2001 John Wiley & Sons, Inc.