Stepanov, A., L. Biesenieks, A. Sokolovs, and I. Galkin. “Development of a Modular Power Converter”. Electrical, Control and Communication Engineering 25, no. 25 (January 1, 2009): 113–116. Accessed November 5, 2024. https://ecce-journals.rtu.lv/ecce/article/view/v10144-009-0024-0.