TY  - RPRT
TI  - Digital counters: inexpensive alternatives.
AU  - P R Sanberg
AU  - W P Bellingham
PY  - 1979
DO  - 10.1016/0031-9384(79)90177-x
UR  - https://pubmed.ncbi.nlm.nih.gov/504478/
ID  - 504478
ER  -