TY  - RPRT
TI  - How is percussion done?
AU  - H C BURGER
AU  - G CASTELEYN
AU  - F L J JORDAN
PY  - 1952
DO  - 10.1111/j.0954-6820.1952.tb13849.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14932783/
ID  - 14932783
ER  -