TY  - RPRT
TI  - Frictional forces related to self-ligating brackets.
AU  - L Pizzoni
AU  - G Ravnholt
AU  - B Melsen
PY  - 1998
DO  - 10.1093/ejo/20.3.283
UR  - https://pubmed.ncbi.nlm.nih.gov/9699406/
ID  - 9699406
ER  -