1. Physiology of Abscisic Acid and Related Substances
2. Anderson, M. 1969. British Patent 1,164,564.
3. Barnsley, W. E., P. A. Gabbott, and B. V. Milborrow. 1968. British Patent 1,101,844.
4. Optical rotatory dispersion of carotenoids
5. Sur la composition de l'arôme de thé noir II