1. H. Conjeaud and P. Mathis, Abstracts of Papers, 4th Int. Con. Photosynthesis, 1977, p. 73; T. W. Goodwin, “The Biochemistry of the Carotenoids,” Vol. 1, Chapman and Hall, London and New York, 1980, p. 77.
2. G. B. Ansell and J. N. Howthorne, “Phospholipids,” Vol. 3, BBA Library, 1964, p. 420.