Luengpailin, S., A. Klangthong, S. Jinaporntham, N. Jitpreeda, and B. Mahapisanpanitchakun. “Leakage of the Sealed Area of New and Reused Peel Pouches”. Khon Kaen University Dental Journal, vol. 21, no. 1, June 2018, pp. 1-9, https://he01.tci-thaijo.org/index.php/KDJ/article/view/131125.