Comments on "Spheroidal vector wave eigenfunction expansion of dyadic Green's functions for a dielectric spheroid" [with reply]

Dudley and Johnson (see ibid., vol.50, p.XX XX, Nov. 2002) comments that Li, Leong, Kooi and Yeo (see ibid., vol.49, p.645-659, April 2001) formulate in detail the dyadic Green's functions for the dielectric spheroid stating that one result of their derivations, the singularity of the electric Green's dyadics is extracted. They also comment that there is nothing formally wrong with extracting the delta function. They object strongly, however, to the authors stating that they have extracted "the singularity of the electric Green's dyadics." They have not done so. Li et. al. reply that they, are grateful for the comments of Dudley et. al clarifying the singular behavior of the electric and magnetic field Green's dyadics. They intended to state "irrotational part of the electric dyadic Green's function" which is highly singular, but misused the term, "singularily of the dyadic Green's function".