Kyoung-il Do and  Byung-seok Lee and  Hee-guk Chae and  Jeong-yun Seo Yong-seo Koo,  A Silicon Controlled Rectifier-Based ESD Protection Circuit with High Holding Voltage and High Robustness Characteristics.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2018, vol. 135(3). 244 - 247
    [viewed 20 October 2019]. Available from: https://publications.waset.org/pdf/10008991.