Ahmed A. Al-Mudhafar and  Ali A. Abduljabar and  Hayder Jawad Albattat,  Breakdown Voltage Measurement of High Voltage Transformers Oils Using an Active Microwave Resonator Sensor.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2023, vol. 195(3). 84 - 88
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10013026.