TY  - RPRT
TI  - Extracoronal amalgam restorations utilizing available tooth structure for retention.
AU  - S H Schwartz
PY  - 1977
DO  - 10.1016/0022-3913(77)90201-3
UR  - https://pubmed.ncbi.nlm.nih.gov/264320/
ID  - 264320
ER  -