1. U. Kreibig, in Optics of Nanosized Metals, ed. by R.E. Hummel, P. Wißmann, Handbook of Optical Properties, Vol. II, Optics of Small Particles, Interfaces and Surfaces, (CRC, Boca Raton, 1997), p. 145
2. B.J. Butkus, Biophoton. Int. 5, 34 (2004)
3. J. Joannopoulos, R. Meade, J. Winn, Photonic Crystals (Princeton Press, Princeton NJ, 1995)
4. See, e.g. the website of the company ‘crystal fibre’:
www.crystal-fibre.com/
5. G. Witte, Ch. Woell, J. Mater. Res. 19, 1889 (2004)