XU, Mengru, Xia XIAO, Qing YUAN, and Yong ZONG. “Mixed Pseudo-Orthogonal Frequency Coding for SAW RFID Tags”. Archives of Acoustics 43, no. 4 (October 19, 2018): 681–687. Accessed June 10, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/2063.