Björkman, O., Hormgren, P. 1963. Adaptability of the photosynthetic apparatus to light intensity in ecotypes from exposed and shaded habitats. Physiol. Plant. 16: 889-914.
Fonteno, W. C., McWilliams, E. L. 1978. Light compensation points and acclimatization of four tropical foliage plants. J. Am. Soc. Hortic. Sci. 103: 52-56.