TY  - RPRT
TI  - Frequency and duration of interval training programs and changes in aerobic power
AU  - Fox, E. L.
AU  - Bartels, R. L.
AU  - Obrien, R.
AU  - Bason, R.
AU  - Mathews, D. K.
AU  - Billings, C. E.
PY  - 1975
UR  - https://ntrs.nasa.gov/citations/19750042446
ID  - 19750042446
ER  -