Wosik, J., M. Kalus, A. Kozlowski, B. Miedzinski, and M. Habrych. “The Efficiency of Reactive Power Compensation of High Power Nonlinear Loads”. Elektronika Ir Elektrotechnika, vol. 19, no. 7, Sept. 2013, pp. 29-32, doi:10.5755/j01.eee.19.7.5158.