Fonseca, Davide S.; Gameiro, Natalia S.: 'Switched reluctance machine drives' (Energy Engineering, 2018), 'Diagnosis and Fault Tolerance of Electrical Machines, Power Electronics and Drives', Chap. 3, pp. 77-119, DOI: 10.1049/PBPO126E_ch3 IET Digital Library, https://digital-library.theiet.org/;jsessionid=8p6mb5fcmgcso.x-iet-live-01content/books/10.1049/pbpo126e_ch3