Media type: E-Article Title: RF-Pen: Practical Real-Time RFID Tracking in the Air Contributor: Wang, Haoyu; Gong, Wei Published: Institute of Electrical and Electronics Engineers (IEEE), 2021 Published in: IEEE Transactions on Mobile Computing, 20 (2021) 11, Seite 3227-3238 Language: Not determined DOI: 10.1109/tmc.2020.2997080 ISSN: 1536-1233; 1558-0660; 2161-9875 Origination: Footnote: