1. Arieli, A., Meltzer, A. and Berman, A., 1979. Seasonal acclimatisation in the hen. Br. Poult. Sci. 20: 505–513.
2. Aulie, A., 1977. The effect of intermittent cold exposure on the thermoregulatory capacity of bantam chicks, Gallus domesticus. Comp. Biochem. Physiol. 56a: 545–549.
3. Balnave, D., 1974. Biological factors affecting energy expenditure. In: T.R. Morris and B.M. Freeman (Editors), Energy requirements of poultry. Br. Poult. Sci. Ltd., Edinburgh, pp. 25–46.
4. Becker, C, 1983. Die Bedeutung von Kürpergewicht sowie Körpergrösse und Körperkondition für das produktive Adaptionsvermögen der Legehenne unter hoher Umgebungstemperatur. Thesis, Berlin, 154 pp.
5. Berman, A. and Snapir, N., 1965. The relation of fasting and resting metabolic rates to heat tolerance in the domestic fowl. Br. Poult. Sci. 6: 207–216.