Kolarovszki, Peter, Jiri Tengler, Dragan Perakovic, and Marko Perisa. 2018. “Impact of Sorting Machine on Life Cycle of Passive UHF RFID Tags Placed on Letter Mail”. Communications - Scientific Letters of the University of Zilina 18 (2), 143-47. http://journals.uniza.sk/index.php/communications/article/view/347.