Markatos, S.; Zervas, M.N.; Giles, I.P.: 'Optical fibre surface plasmon wave devices', Electronics Letters, 1988, 24, (5), p. 287-288, DOI: 10.1049/el:19880193
IET Digital Library, https://digital-library.theiet.org/;jsessionid=7tl9s70s57q37.x-iet-live-01content/journals/10.1049/el_19880193