TY  - RPRT
TI  - An introduction to centroid cephalometrics.
AU  - J S Johnson
AU  - R J Hubbold
PY  - 1982
DO  - 10.1179/bjo.9.1.32
UR  - https://pubmed.ncbi.nlm.nih.gov/6948572/
ID  - 6948572
ER  -