TY  - RPRT
TI  - A method of measuring the apical base.
AU  - H G Sergl
AU  - W J Kerr
AU  - J H McColl
PY  - 1996
DO  - 10.1093/ejo/18.5.479
UR  - https://pubmed.ncbi.nlm.nih.gov/8942097/
ID  - 8942097
ER  -