1. Riepma, S. F., The Story of Margarine PP.III, Washington, D. C., Public Affairs Press (1970)
2. Snodgrass, K., Margarine as a Substitute. Food Research Institute, Stanford University pp. 121, (1930)
3. Watanabe, K., and Sato, Y., Studies on the Changes of Meat fats by Various Processings. Part II. Gas Chromatographic Identification of Aliphatic (8) and (6) Lactones Obtained from Beef Fats. Agr. Biol. Chem. 32:(2),191 (1968)
4. Ibid. Lactones in the Flavor of Heater Pork Fat. Agr. Biol. Chem. 33:(2),242–249 (1969)
5. Als, Gert, Delta-lactones in flavoring. Food manufacture January 1973.