TY  - RPRT
TI  - [Improved ultrasonic diagnosis through grey value presentation].
AU  - H Frommhold
AU  - D Koischwitz
PY  - 1977
DO  - 10.1055/s-0028-1104888
UR  - https://pubmed.ncbi.nlm.nih.gov/837855/
ID  - 837855
ER  -