High data density and capacity in chipless radiofrequency identification (chipless-RFID) tags based on double-chains of S-shaped split ring resonators (S-SRRs)Cristian Herrojo, Javier Mata-Contreras, Ferran Paredes and Ferran MartínEPJ Appl. Metamat., 4 (2017) 8DOI: https://doi.org/10.1051/epjam/2017008
