'Introduction' (Energy Engineering, 2017), 'Fuzzy Logic Control in Energy Systems with design applications in MATLAB®/Simulink®', Chap. 1, pp. 1-5, DOI: 10.1049/PBPO091E_ch1
IET Digital Library, https://digital-library.theiet.org/;jsessionid=296x71hgu53k3.x-iet-live-01content/books/10.1049/pbpo091e_ch1