Charoenkit, M., and P. Pumpaluk. “A micro-computed tomography study of internal gap with and without resin-modified glass-ionomer cement liner under occlusal resin composite restoration”. Mahidol Dental Journal, vol. 40, no. 2, Aug. 2020, pp. 159-64, https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/200228.