1. H H Hopkins and N S Kapany, A flexible fibrescope, using static scanning, Nature, Vol.173, pp.39–41, 1954, https://doi.org/10.1038/173039b0.
2. N S Kapany, Fiber Optics, Scientific American, a division of Nature America, Inc., Vol.203, No.5, pp.72–81, 1960, http://ww.jstor.org/stable/24940695.
3. Bahaa E A Salen, Malvin Carl Teich, Fundamentals of Photonics, John Wiley & Sons, Inc., 1991.
4. E Snitzer, Cylindrical dielectric waveguide modes, J. Opt. Soc. Am., Vol.51, pp.491–498, 1961.
5. C K Kao and G A Hockham, Dielectric-fibre surface waveguides for optical frequencies, Proc. IEE., Vol.113, No.7, pp.1151–1158, 1966.