1. Amino acid requirements and amino acid supply in the sheep;Armstrong,1973
2. The use of maleic anhydride for the reversible blocking of amino groups in polypeptide chains;Butler;Biochem. J.,1969
3. Chemical methods to improve utilization of low quality roughages and amino acids by wool sheep;Coetzee,1988
4. Utilization of amino acids in the ruminant. 1. The protection of amino acids with maleic anhydride to prevent deamination in the rumen;De Wet;Agroanimalia,1975