Linyu Guan, Liqiang Zhang, Jiawei Ma, Chunyan Zhang, and Meihua Zhang. “Design of Intelligent Trading Bookcase Based on New Electronic Control Lock”. IJRDO - Journal of Mechanical And Civil Engineering 6, no. 4 (April 30, 2020): 10-15. Accessed March 12, 2026. https://ijrdomce.com/article/view/3596.