Wei, Haoyan, et al. “RAGN-IIoT: A Retrieval-Augmented NL2SQL Framework With Dynamic Sensor-Selection Guardrails for Industrial IoT Time-Series Data Warehouses”. Journal of Computer, Signal, and System Research, vol. 2, no. 7, Dec. 2025, pp. 78-88, https://doi.org/10.71222/esyn7b58.