TY  - RPRT
TI  - Sex differences in performance-matched marathon runners.
AU  - J Helgerud
AU  - F Ingjer
AU  - S B Strømme
PY  - 1990
DO  - 10.1007/bf00236064
UR  - https://pubmed.ncbi.nlm.nih.gov/2079063/
ID  - 2079063
ER  -