1. Yang T, Cabani A, Chafouk H. A survey of recent indoor localization scenarios and methodologies. Sensors. 2021;21:8086.
2. Wang Z, Chen R, Xu S, Liu Z, Guo G, Chen L. A novel method locating pedestrian with smartphone indoors using acoustic fingerprints. IEEE Sens J. 2021;21(24):27887–96.
3. Chen R, Chen L. Smartphone-based indoor positioning technologies. Singapore: Springer Singapore; 2021. p. 467–90.
4. IEEE standard for information technology–telecommunications and information exchange between systems—local and metropolitan area networks-specific requirements—part 11: Wireless LAN medium access control (MAC) and physical layer (phy) specifications—corrigendum 1—correct IEEE 802.11ay assignment of protected announce support bit, IEEE Std 802.11-2020/Cor 1-2022 (Corrigendum to IEEE Std 802.11-2020 as amended by IEEE Std 802.11ax-2021, IEEE Std 802.11ay-2021, and IEEE Std 802.11ba-2021). 2022:1–8.
5. Bellavista-Parent V, Torres-Sospedra J, Perez-Navarro A. New trends in indoor positioning based on wifi and machine learning: a systematic review. In: 2021 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2021, p. 1–8.