'Scheme investment procedure' (Energy Engineering, 2018), 'High Voltage Power Network Construction', Chap. 17, pp. 499-518, DOI: 10.1049/PBPO110E_ch17 IET Digital Library, https://digital-library.theiet.org/;jsessionid=1eovdbwv5nrnf.x-iet-live-01content/books/10.1049/pbpo110e_ch17