TY  - RPRT
TI  - New tissue-equivalent phantom materials for negative pions.
AU  - K R Smith
AU  - D F Jackson
PY  - 1987
DO  - 10.1088/0031-9155/32/2/008
UR  - https://pubmed.ncbi.nlm.nih.gov/3562536/
ID  - 3562536
ER  -