Varskyi, H. M. “Flow Diagrams of Electromagnetic Transformers of Current and Tension of Measuring Channels of Control Systems by Electroenergy Objects”. Visnyk of Vinnytsia Politechnical Institute, no. 3, Nov. 2010, pp. 119-23, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/1253.