1. Ansevin, A. T. & Brown, B. W., Biochemistry 10: 1133, 1971.
2. Arnon, D. I., Plant Physiol 24: 1,1949.
3. Bonner, J., Chalkley, G. R., Dahmus, M., Fambrough, D., Fujimura, F., Huang, R.-C. C., Huberman, J., Jensen, R., Marushige, K., Ohlenbusch, H., Olivera, B. & Widholm, J., in: Colowick, S. P. & Kaplan, N. O. (ed.): Methods in Enzymology, Vol. XII, Nucleic Acids, Part B, p. 3, Academic Press, New York — London 1968.
4. Bonner, J. & Huang, R.-C. C., J. mol Biol 6: 169, 1963.
5. Bottomley, W., Plant Physiol. 45: 608, 1970.