TY  - RPRT
TI  - Active filters: some simple design methods for biomedical workers.
AU  - C J Derrett
AU  - P J Tavner
PY  - 1975
DO  - 10.1007/bf02478093
UR  - https://pubmed.ncbi.nlm.nih.gov/1195881/
ID  - 1195881
ER  -