Laughton, M. A.: 'Artificial intelligence techniques in power systems' (Energy Engineering, 1997), 'Artificial Intelligence Techniques in Power Systems', Chap. 1, pp. 1-18, DOI: 10.1049/PBPO022E_ch1
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3ioq6qwvsw6x2.x-iet-live-01content/books/10.1049/pbpo022e_ch1