Sladen, F.M.E.; Payne, D.N.; Adams, M.J.: 'Definitive profile-dispersion data for germania-doped silica fibres over an extended wavelength range', Electronics Letters, 1979, 15, (15), p. 469-470, DOI: 10.1049/el:19790338
IET Digital Library, https://digital-library.theiet.org/;jsessionid=27fr685dh6ou3.x-iet-live-01content/journals/10.1049/el_19790338