1. Blankenship, R. E., Mancino, L. J., Feick, R., Fuller, R. C., Miachnicki, J., Frank, H. A., Kirmaier, C. & Holten, D. (1984) inAdvances in PhotosynthesisResearch(Sybesma, C., Ed.) Vol. 1, pp 203−206, Martinus Nijhoff/Dr. W. Junk, The Hague, The Netherlands.