หงษ์ยิ้ม นิมิตร, and มิตะถา สมศักดิ์. “Designing Controlling system and Long Range Data-logging Systems for Smart Agriculture using APRS protocols”. RMUTL Engineering Journal 3, no. 1 (January 1, 2018): 19–29. accessed August 28, 2026. https://ph01.tci-thaijo.org/index.php/RMUTLEngJ/article/view/183211.