Diemeer, M.B.J.; de Vries, W.J.; Benoist, K.W.: 'Fused coupler switch using a thermo-optic cladding', Electronics Letters, 1988, 24, (8), p. 457-458, DOI: 10.1049/el:19880309
IET Digital Library, https://digital-library.theiet.org/;jsessionid=73edidhnug234.x-iet-live-01content/journals/10.1049/el_19880309