TY  - RPRT
TI  - Exercise intensity: subjective regulation by perceived exertion.
AU  - M A Smutok
AU  - G S Skrinar
AU  - K B Pandolf
PY  - 1980
UR  - https://pubmed.ncbi.nlm.nih.gov/7458621/
ID  - 7458621
ER  -