TY  - RPRT
TI  - Quantitative SPECT: basic theoretical considerations.
AU  - J A Parker
PY  - 1989
DO  - 10.1016/s0001-2998(89)80031-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2652305/
ID  - 2652305
ER  -