TY  - RPRT
TI  - Errors generated with the use of rectangular collimation.
AU  - E T Parks
PY  - 1991
DO  - 10.1016/0030-4220(91)90442-f
UR  - https://pubmed.ncbi.nlm.nih.gov/2052340/
ID  - 2052340
ER  -