A. D. Žigić, S. Milosavljević, I. Lukić, S. Škundrić, D. Bolić, and N. N. Cakić, “Source of Stable Single-Phase Voltage to 60V, Current to 6A and Adjustable Angle between Voltage and Current from 0 to 360°”, Zb EI Nikola Tesla, vol. 23, no. 23, pp. 19–31, Nov. 2013, doi: 10.5937/zeint23-4369.