TY  - RPRT
TI  - Simple simulated human head for checking echoencephalographic equipment.
AU  - A C Hudson
AU  - J L Bradley
PY  - 1973
DO  - 10.1007/bf02475549
UR  - https://pubmed.ncbi.nlm.nih.gov/4746393/
ID  - 4746393
ER  -