TY  - RPRT
TI  - Root canal instruments are poorly standardized.
AU  - E Stenman
AU  - L S Spångberg
PY  - 1993
DO  - 10.1016/s0099-2399(06)81358-0
UR  - https://pubmed.ncbi.nlm.nih.gov/8245754/
ID  - 8245754
ER  -