S. Luengpailin, A. Klangthong, S. Jinaporntham, N. Jitpreeda, and B. Mahapisanpanitchakun, “Leakage of the Sealed Area of New and Reused Peel Pouches”, Khon Kaen Dent J, vol. 21, no. 1, pp. 1–9, Jun. 2018.