SEWELL, P., WYKES, J., CHRISTOPOULOS, C., BENSON, T. M., THOMAS, D. W. P. and VUKOVIC, A., 2007. Degenerate Clusters in Unstructured TLM In: Invited Paper in the Proceedings of the 11th International Symposium on Microwave and Optical Technology (ISMOT 07). Monte Porzio catone, Italy. 17 - 21 December 2007. 121 - 123