Vestenicky, Peter, Martin Vestenicky, and Juraj Palecek. “Calculation and Measurement of RFID Tag Critical Frequency”. Communications - Scientific letters of the University of Zilina 15, no. 2A (July 31, 2013): 96-101. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/662.