WASET
    Radhika Ambatipudi and  Hari Babu Kotte and  Dr. Kent Bertilsson,  Coreless Printed Circuit Board (PCB) Stepdown Transformers for DC-DC Converter Applications.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2010, vol. 46(10). 1487 - 1496
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/5540.