Indoor Area Estimation System Using RSSI-Measuring Handheld Reader Utilizing Directional Reference RFID Tags and Machine Learning. - Danang Kumara Hadi; Zequn Song; Budi Rahmadya; Shogo Kozume; Tomonori Sumiya; Ran Sun; Shigeki Takeda; Xiaoyan Wang 003 (IEEE Access, 2024)