1. Peters, John P. and van Slyke, Donald D.: Quantitative Clinical Chemistry. Interpretations. Vol. I. Williams and Wilkins Co., Balt.; 2nd ed.; p. 374, 1946.
2. Bloor, W. R.: Biochemistry of the Fatty Acids and their Compounds, the Lipids. Reinhold Publishing Co., New York; p. 1, 1943.
3. Harrow, Benjamin: A Textbook of Biochemistry. W. B. Saunders Co., Phil.; p. 110, 1950.
4. Thannhauser, Siegfried J.: Lipidoses. Diseases of the Cellular Lipid Metabolism. Oxford University Press, New York; 2nd ed.; p. 11, 1950.
5. Best, Charles H. and Taylor, Norman B.: The Physiological Basis of Medical Practice. Williams and Wilkins Co., Balt.; 5th ed.; p. 4, 1950.