Bojoi, Radu; Zarri, Luca: 'Multiphase machine drives' (Control, Robotics and Sensors, 2019), 'Modeling, Simulation and Control of Electrical Drives', Chap. 16, pp. 579-636, DOI: 10.1049/PBCE118E_ch16
IET Digital Library, https://digital-library.theiet.org/;jsessionid=atbn4a6b33gt6.x-iet-live-01content/books/10.1049/pbce118e_ch16