TY  - RPRT
TI  - Learning to control heart rate: binary vs analogue feedback.
AU  - P J Lang
AU  - C T Twentyman
PY  - 1974
DO  - 10.1111/j.1469-8986.1974.tb01127.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4438546/
ID  - 4438546
ER  -