Silva, A.R.J.; Martins, D.C.: 'Numerical simulation of power static converters: diagonalization method of the dynamical matrix', IET Conference Proceedings, 1996, p. 508-512, DOI: 10.1049/cp:19960966
IET Digital Library, https://digital-library.theiet.org/;jsessionid=vxvvj8jx5inr.x-iet-live-01content/conferences/10.1049/cp_19960966