TY  - RPRT
TI  - Improved estimation of the detector response function for converging beam collimators.
AU  - E C Frey
AU  - B M Tsui
AU  - G T Gullberg
PY  - 1998
DO  - 10.1088/0031-9155/43/4/021
UR  - https://pubmed.ncbi.nlm.nih.gov/9572517/
ID  - 9572517
ER  -