A multi-level inverter for driving a high voltage display. - Hirak Patangia; Tandi Wijaya; Dennis Gregory (ISCAS (5), 2005)

A Harmonic Reduction Scheme in SPWM. - Hirak Patangia; Dennis Gregory (APCCAS, 2006)

Sectionalized PWM (S-PWM): A new multilevel modulation strategy. - Hirak Patangia; Dennis Gregory (ISCAS, 2008)