Donalds, L.J.; French, W.G.; Mitchell, W.C.; Swinehart, R.M.; Wei, T.: 'Electric field sensitive optical fibre using piezoelectric polymer coating', Electronics Letters, 1982, 18, (8), p. 327-328, DOI: 10.1049/el:19820223
IET Digital Library, https://digital-library.theiet.org/;jsessionid=v2epjow0tdk0.x-iet-live-01content/journals/10.1049/el_19820223