University of Helsinki
Jorge Casal has published a review on the mechanisms behind shade avoidance. It includes all the latest advances, e.g. responses to blue:green photon ratio and how signals present at different times of the day are integrated.
Casal, J. J. (2012) Shade Avoidance. The Arabidopsis Book, The Arabidopsis Book, The American Society of Plant Biologists, 2012, e0157-