Garcia, E., De Haro, L., O'Sullivan, Créidhe, Cahill, G., Lopez Fernandez, J.A., Tercero, F., Galocha, B. and Beseda, J.L. (2003) Beam Mode Expansion of Corrugated Conical Horns with Phase Correcting Lens: Application to Radioastronomy Receivers. Experimental Astronomy, 15. pp. 173-193. ISSN 0922-6435