TY  - RPRT
TI  - Simplified and standarized bisecting-angle technic for dental radiography.
AU  - W J Updegrave
PY  - 1967
DO  - 10.14219/jada.archive.1967.0368
UR  - https://pubmed.ncbi.nlm.nih.gov/5234119/
ID  - 5234119
ER  -