TY  - RPRT
TI  - Focal spot sizes.
AU  - F H KEMP
AU  - A F NICHOLS
PY  - 1958
DO  - 10.1259/0007-1285-31-369-486
UR  - https://pubmed.ncbi.nlm.nih.gov/13572801/
ID  - 13572801
ER  -