1. Effect of hyperammonaemia on blood glucose and plasma insulin levels in sheep;Barej;Quart. J. Exper. Physiol.,1979
2. Barej , W. M. Wiechetek S. Garwacki 1980 The metabolic effect of portal and peripheral hyperammonaemia in sheep Third International Symposium on Nitrogen Metabolism of Farm Animals
3. The effect of hyperammonaemia on plasma glucose, insulin, glucagon and adrenaline levels in sheep;Barej;Zbl. Vet. Met. A,1982
4. Metabolic effects of catecholamines in sheep;Basset;Aust. J. Biol. Sci.,1970
5. The effects of non-protein-nitrogen additives on lipid and carbohydrate metabolism in sheep;Boivin;Ann. Rech. Vet.,1979