TY  - RPRT
TI  - Electronic apex locators.
AU  - M P J Gordon
AU  - N P Chandler
PY  - 2004
DO  - 10.1111/j.1365-2591.2004.00835.x
UR  - https://pubmed.ncbi.nlm.nih.gov/15189431/
ID  - 15189431
ER  -