TY  - RPRT
TI  - A procedure for concurrently measuring elapsed time and response frequency.
AU  - R C Katz
PY  - 1973
DO  - 10.1901/jaba.1973.6-719
UR  - https://pubmed.ncbi.nlm.nih.gov/16795457/
ID  - 16795457
ER  -