Bao, Xuexin, and Dan Zhang. “Design and Implementation of Container Positioning System Based on Wireless Sensor Network”. International Journal of Online and Biomedical Engineering (iJOE) 14, no. 05 (May 25, 2018): pp. 129–142. Accessed November 21, 2024. https://online-journals.org/index.php/i-joe/article/view/8645.