1. Cladé, J., Middleton, R.M.H., and Uhlmann, E.: ‘Special operational test on the cross Channel connection’, High-voltage d.c. transmission, 1966), p. 21–25IEE Conf. Publ., 22
2. Natale, M., Lane, F.J., and Calverley, T.: ‘The Sardinian-Italian mainland h.v. d.c. interconnection’, High-voltage d.c. transmission, p. 42–45ibid.
3. Last, F.H., Jarrett, G.S.H., Huddart, K.W., Brewer, G.L., and Watson, W.G.: ‘Isolated generator-d.c. link feasibility trials’, High-voltage d.c. transmission, p. 58–65ibid.
4. Robinson, G.H.: ‘Experience with harmonics: New Zealand h.v. d.c. transmission scheme’, High-voltage d.c. transmission, p. 442–444 ibid.