I'm writing a Thesis on IoT networks and authentication protocols, I've found this technology called Zigbee that seems to be really interesting but i can't find anything about which authentication procedure it uses to determine a device's identity when it joins the network. Where can i find some papers about it? I tried looking on google scholar, researchgate and ieeexplore. It would be great if someone can help my to find just the procedure name so i can investigate.
Thank you :)