R.  Zia, Selker, M. D., and Brongersma, M. L., ?Leaky and bound modes of surface plasmon waveguides?, Physical Review B, vol. 71, no. 16, p. 165431, 2005.

 R.  Zia, Selker, M. D., Catrysse, P. B., and Brongersma, M. L., ?Geometries and materials for subwavelength surface plasmon modes?, Journal of the Optical Society of America A, vol. 21, no. 12, p. 2442, 2004.