Try link to:Similars in:
Björkman, O. 1981. Responses to different quantum flux densities. Pp. 57-107. In: O.L. Langel; P.S. Nobel; C.B. Osmond & H. Ziegler (eds.). Encyclopedia of Plant Physiology: Physiological Plant Ecology I. v. 12a. (New series). New York, Springer Verlag.