Ekwue, A.; Cheng, D. T.; Macqueen, J. F.: 'Artificial intelligence techniques for voltage control' (Energy Engineering, 1997), 'Artificial Intelligence Techniques in Power Systems', Chap. 6, pp. 109-122, DOI: 10.1049/PBPO022E_ch6
IET Digital Library, https://digital-library.theiet.org/;jsessionid=2nml7qkdbf4kh.x-iet-live-01content/books/10.1049/pbpo022e_ch6