TY  - RPRT
TI  - X rays: half-value layer range 0.01-8.0 mm A1 (approx. 6-150 kV peak potential difference).
AU  - W A Jennings
AU  - R M Harrison
PY  - 1983
UR  - https://pubmed.ncbi.nlm.nih.gov/6600114/
ID  - 6600114
ER  -