Khamwong, P., P. S. itilertpisan, S. Boripuntakul, D. Pinkaew, P. Tuanwaena, P. Tadchana, and S. Pantueng. “The relationship of arm curl test and strength and endurance tests of elbow flexors with hand-held dynamometer in older adults”. Archives of Allied Health Sciences, vol. 31, no. 3, Dec. 2019, pp. 412-8, https://he01.tci-thaijo.org/index.php/ams/article/view/233175.