TY  - RPRT
TI  - Second thoughts on the second filter with special reference to the Kemp echo.
AU  - A Tumarkin
PY  - 1982
DO  - 10.1017/s0022215100093373
UR  - https://pubmed.ncbi.nlm.nih.gov/7130847/
ID  - 7130847
ER  -