Use of extra degrees of freedom in multilevel drives. - Afef Bennani-Ben Abdelghani; Carlos A. Martins; Xavier Roboam; Thierry A. Meynard (IEEE Trans. Ind. Electron., 2002)

A transformerless resonant multilevel DC-DC step-up converter. - Carlos A. Martins; Philippe Viarouge; Jérôme Cros (IECON, 2012)