Prasetyo, E. P., K. Samadi, and C. G. J. Lunardhi. “The Surface Roughness Difference Between Microhybrid and Polycrystalline Composites After Polishing”. Dental Journal, vol. 41, no. 4, Dec. 2008, pp. 164-6, doi:10.20473/j.djmkg.v41.i4.p164-166.