Todeschini, Grazia: 'Shunt flexible a.c. transmission' (Energy Engineering, 2017), 'Power Quality in Future Electrical Power Systems', Chap. 5, pp. 165-204, DOI: 10.1049/PBPO092E_ch5 IET Digital Library, https://digital-library.theiet.org/;jsessionid=2igk2rp33e1u4.x-iet-live-01content/books/10.1049/pbpo092e_ch5