Pramerudeechaisak, P., and R. Wongsan. “READING RANGE IMPROVEMENT FOR UHF RFID READER WITH METAMATERIAL-BASED SRR ARRAY STRUCTURE”. Suranaree Journal of Science and Technology, vol. 26, no. 3, Aug. 2026, pp. 247-56, https://ph04.tci-thaijo.org/index.php/SUJST/article/view/14652.