TY  - RPRT
TI  - Surface hardness development in light-cured composites.
AU  - D C Watts
AU  - O M Amer
AU  - E C Combe
PY  - 1987
DO  - 10.1016/s0109-5641(87)80085-4
UR  - https://pubmed.ncbi.nlm.nih.gov/3479364/
ID  - 3479364
ER  -