HERDA, E., AKA, P. and TRIAMININGSIH, S. (2019) “INFLUENCE OF POLISHING SYSTEM ON COLOR CHANGES FOR A NANOIONOMER RESTORATIVE MATERIAL AFTER IMMERSION IN A COFFEE-BASED SOLUTION”, International Journal of Applied Pharmaceutics, 11(1), pp. 256–261. doi: 10.22159/ijap.2019.v11s1.XX.