TY  - RPRT
TI  - The traction hook on the modified arrowhead clasp.
AU  - B B Lovius
PY  - 1973
DO  - 10.1038/sj.bdj.4803018
UR  - https://pubmed.ncbi.nlm.nih.gov/4518257/
ID  - 4518257
ER  -