• Tracking of MPP for three-level neutral-point clamped qZ-source off-grid inverter in solar applicationsRoncero-Clemente, Carlos; Husev, Oleksandr; Minambres-Marcos, Victor; Romero-Cadaval, Enrique; Stepenko, Serhii; Vinnikov, DmitriJournal of microelectronics, electronic components and materials2013 / p. 212-221 : ill https://www.researchgate.net/publication/259495902_Tracking_of_MPP_for_three-level_neutral-point_clamped_qZ-source_off-grid_inverter_in_solar_applications