1. The determination of copper in oils and fats by means of dibenzyldithiocarbamic acid and its salts;Abbott;Analyst.,1954
2. Methods for the chemical analysis of butter. B.S. 769:1961.,1961
3. The copper content of butter in Victoria - the current position;Erwin;Aust. J. Dairy Technol.,1966
4. Effect of copper on the keeping quality of butter produced in Emilia;Fontana;Latte,1963
5. On the limit to which copper is detrimental to the quality of cold-stored butter;Kruisheer;Proc. 14. Int. Dairy Congr.,1956