Web based IoT monitoring system for ultrasonic water flow measurement using ESP32-S3 and cloud database. J. Soft Comput. Explor. [Internet]. 29. prosinac 2025. [citirano 25. kolovoz 2026.];6(4):258-65. Dostupno na: https://shmpublisher.com/index.php/joscex/article/view/625