Kanphet J, Saenkla W, Tawonwong T. Stability analysis of calibration factor for absorbed dose in water (ND,w) in famer type ionization chambers using 10 years historical data. Thai J Rad Tech [internet]. 2024 Dec. 30 [cited 2025 Mar. 30];49(1):121-8. available from: https://he02.tci-thaijo.org/index.php/tjrt/article/view/269609