TY  - RPRT
TI  - Beta-endorphin and sprint training.
AU  - J M Metzger
AU  - E A Stein
PY  - 1984
DO  - 10.1016/0024-3205(84)90608-8
UR  - https://pubmed.ncbi.nlm.nih.gov/6325839/
ID  - 6325839
ER  -