Robert G. Luedke, and Moti Ranjan Tandi. “Secure and Scalable LPWAN Architectures for Industrial Internet of Things (IIoT)”. Progress in Electronics and Communication Engineering 3, no. 1 (October 16, 2025): 65–72. Accessed January 23, 2026. https://ecejournals.in/index.php/PECE/article/view/422.