TY  - RPRT
TI  - Silicone ball variance. A clinical and pulse duplicator study.
AU  - J J Collins
AU  - E J Berg
AU  - D E Harken
PY  - 1968
DO  - 10.1016/s0003-4975(10)66121-8
UR  - https://pubmed.ncbi.nlm.nih.gov/5745865/
ID  - 5745865
ER  -