1. Science and Medicine of Exercise and Sports;Bar-Or,1974
2. Bar-Or, O. and Irbar, O., In: Proceedings 7th Int. Symp., Paed. Work Physiology, Trois Rivières. In print.
3. Ben Ari, E. and Bar-Or, O., Paper presented at the 10th International Congress of Gerontology, Jerusalem (1975).
4. Borg, G., Physical Performance and Perceived Exertion., Thesis, Lund, Gleerup (1962).