Zulkapli, Nuralia, and Nurul Nadia Adnan. “Optical Fiber Sensor for Soil Moisture Detection”. Enhanced Knowledge in Sciences and Technology 5, no. 2 (December 17, 2025): 300–306. Accessed April 7, 2026. https://penerbit.uthm.edu.my/periodicals/index.php/ekst/article/view/18596.