1. Agricultural Research Council. 1965. The nutrient requirements of farm livestock. No. 2. Ruminants. Agric. Res. Counc., London.
2. The heat increment of steam-volatile fatty acids in fasting sheep;Armstrong;Brit. J. Nutr.,1957
3. The utilization of acetic, propionic and butyric acids by fattening sheep;Armstrong;Brit. J. Nutr.,1957
4. The utilization of the energy of carbohydrate by ruminants;Armstrong,1961
5. Effects of acetic and propionic acids on energy retention and milk secretion in goats;Armstrong,1965