A. O. AbdAli, A. K. Abdulabbas, and H. J. Nekad, “Nonconventional Diode Clamped Multilevel Inverter with Reduced Number of Switches”, IJEEE, vol. 16, no. 2, pp. 21–32, Jul. 2020, doi: 10.37917/ijeee.16.2.2.