N. Aravantinos-Zafiris and  M. M. Sigalas,  Light Confinement in Low Index Nanometer Areas.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2012, vol. 71(11). 1119 - 1124
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/7126.