TY  - RPRT
TI  - Feather-edged or knife-edged preparation and impression technique.
AU  - E O Schweikert
PY  - 1984
DO  - 10.1016/0022-3913(84)90104-5
UR  - https://pubmed.ncbi.nlm.nih.gov/6381709/
ID  - 6381709
ER  -