Watchanasanout, N. ., and T. . Teparat-Burana. “Comparison Between Single and Multiple Adjunctive Er,Cr:YSGG Application to Scaling and Root Planing in Periodontal Maintenance Patients With Residual Periodontal Pockets: A 3-Year Follow-up”. Mahidol Dental Journal, vol. 41, no. 2, Aug. 2021, pp. 157-64, https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/249499.