A. Muthuramalingam and  S. Himavathi,  Evaluation of Power Factor Corrected AC - DC Converters and Controllers to meet UPS Performance Index.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 860 - 868
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/14463.