[need help] waveguide theory

Hi...

I need articles or papers related to the theory of Seki's alternative expression in waveguide theory. Does anyone has such article (s)?
I would welcome any comments or related informations you might have.
Thank you so much.

regards,
ado



I have found this document. But I don't have any access to it. Does anyone has link or such document on hand. I need this paper so bad. Please help me..
thanks.

An alternative representation of electromagnetic fields in a rectangular waveguide with an aperture in its wall. H Seki - IEICE Opt. Radio Wave Elec. Nat. Cony. Rec, 1984