Comment on "Scattering by a bi-isotropic body" [with reply]

The author comments on a paper by Monzon (IEEE Trans. Antennas Propagat., vol.43, p.1288-96, Nov. 1995). The author comments that Monzon gave no indication as to whether the nonreciprocal variety of bi-anisotropic media can or do exist. The present comment notes that there is no reason to suggest that these can or do exist. A reply is presented by Monzon where he feels that the situation regarding these materials is not yet settled.