1. Bell R, O'Neill M. Exercise and pregnancy. Birth 1994;21: 85-95.
2. Effect of prenatal heat stress on brain growth and serial discrimination reversal learning in the guinea pig;Jonson, K.M.; Lyle, J.G.; Edwards, M.J.; Penny, R.H.C.;Brain Res Bull,1976
3. Some aspects of placental function in chronically heat-stressed ewes;Bell, A.W.; Wilkening, R.B.; Meschia, G.;Jf Dev Physiol,1987
4. American College of Obstetricians and Gynecologists. Home exercise program: exercise during pregnancy and the postnatal period;Washington DC: American College of Obstetricians and Gynecologists,1985
5. Resource unit 106;Exercise, Bell R.; pregnancy;Royal Australian College of Obstetricians and Gynaecologists continuing education,1993