TY  - RPRT
TI  - Tonometers and their standardization.
AU  - A MAHNEKE
PY  - 1956
DO  - 10.1111/j.1755-3768.1956.tb03360.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13372214/
ID  - 13372214
ER  -