Žigić, Aleksandar D, Srđan Milosavljević, Ivan Lukić, Slobodan Škundrić, Dušan Bolić, and Nikola N. Cakić. 2013. “Source of Stable Single-Phase Voltage to 60V, Current to 6A and Adjustable Angle Between Voltage and Current from 0 to 360°”. Proceedings, Electrical Engineering Institute "Nikola Tesla" 23 (23): 19-31. https://doi.org/10.5937/zeint23-4369.