Zuchriadi, A., B. Martana, F. Rahayu, and S. Pradana. “Design and Development of an IoT-Based Smart Trolley With Budget-Limiting Features to Reduce Queues in Supermarkets”. Jurnal Mantik, vol. 9, no. 2, Aug. 2025, pp. 792-9, doi:10.35335/mantik.v8i6.6619.