Haldane, T.G.N.; Blackstone, P.L.: 'The authors' reply to the discussion on “Problems of hydro-electric design in mixed thermal-hydro-electric systems”', Proceedings of the IEE - Part A: Power Engineering, 1955, 102, (3), p. 330-331, DOI: 10.1049/pi-a.1955.0074
IET Digital Library, https://digital-library.theiet.org/;jsessionid=64br85t8a1lq5.x-iet-live-01content/journals/10.1049/pi-a.1955.0074