![Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications](https://www.mdpi.com/sensors/sensors-21-01329/article_deploy/html/images/sensors-21-01329-g019.png)
Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications
![Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications](https://www.mdpi.com/sensors/sensors-21-01329/article_deploy/html/images/sensors-21-01329-g025.png)
Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications
![Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications](https://pub.mdpi-res.com/sensors/sensors-21-01329/article_deploy/html/images/sensors-21-01329-g012.png?1614060709)
Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications
Pre-history of the Mediaeval Drama: The Antecedente of the Tropes and the Oonditions of their Appearance.
![The Practice of Penance in Communities of Benedictine Women Religious in Central Medieval England | Speculum: Vol 92, No 1 The Practice of Penance in Communities of Benedictine Women Religious in Central Medieval England | Speculum: Vol 92, No 1](https://www.journals.uchicago.edu/cms/10.1086/689410/asset/images/medium/fg2_online.gif)
The Practice of Penance in Communities of Benedictine Women Religious in Central Medieval England | Speculum: Vol 92, No 1
![Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications Sensors | Free Full-Text | Ultrasonic-Based Environmental Perception for Mobile 5G-Oriented XR Applications](https://pub.mdpi-res.com/sensors/sensors-21-01329/article_deploy/html/images/sensors-21-01329-g010.png?1614060709)