TY  - RPRT
TI  - Root complex and root canal system: a correlation analysis using one-rooted mandibular second molars.
AU  - O Carlsen
PY  - 1990
DO  - 10.1111/j.1600-0722.1990.tb00973.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2399422/
ID  - 2399422
ER  -