Krival, I. I., A. I. Skrypnyuk, V. A. Protsenko, and A. V. Maryenko. “Сhoosing the Optimal Parameters of Some Frequency meter’s Units of Microwave Band”. Technology and Design in Electronic Equipment, no. 3, June 2011, pp. 10-13, https://www.tkea.com.ua/index.php/journal/article/view/TKEA2011.3.10.