Sirited, P., R. Jitpornkulwasin, M. Phadungyam, J. Sinthusuwan, and S. Thongphet. “The Wooden Massage Roller : Healthy Innovation from Palmyra Palm for Elderly People With a Muscle Pain”. Journal of The Royal Thai Army Nurses, vol. 21, no. 1, Apr. 2020, pp. 1-8, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/206997.