A practical evaluation of harmonic emission assessment. - Duan Serfontein; Johan Rens (AFRICON, 2011)

Continuous harmonic impedance assessment using online measurements. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (AMPS, 2015)

Improved event based method for harmonic impedance assessment. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (AMPS, 2016)

Continuous Event-Based Harmonic Impedance Assessment Using Online Measurements. - Duan Serfontein; Johan Rens; Gerhard Botha; Jan Desmet (IEEE Trans. Instrum. Meas., 2016)

Harmonic Distortion Compliance Assessment and Renewable Generators: Issues and Proposed Update. - Umberto Cella; Duan Serfontein; Jason David; Jennifer Crisp (ISGT Asia, 2021)