1. Borthwick H.A. (1972) History of phytochrome — Biological significance of phytochrome. In: Phytochrome, pp. 3–44, Mitrakos K. and Shropshire W Jr. (eds.) Academic Press, London.
2. Hendricks S.B. and VanDerWoude W.J. (1983) How phytochrome acts: perspectives on the continuing quest. In: Encyclopedia of Plant Physiology, New Series, Vol 16A, Photomorphogenesis, pp. 3–23, Shropshire W Jr. and Mohr H. (eds.) Springer-Verlag, Berlin.
3. Hillman W.S. (1967) The physiology of phytochrome. Annu. Rev. Plant Physiol. 18: 301–324.
4. Mancinelli A.L. (1985) Light-dependent anthocyanin synthesis. Bot. Rev. 51: 107–157.
5. Toole E.H., Hendricks S.B., Borthwick H.A. and Toole V.K. (1956) Physiology of seed germination. Annu. Rev. Plant Physiol. 7: 299–324.