Dalsgaard, B., Trøjelsgaard, K., Martín González, A.M., Nogués-Bravo, D., Ollerton, J., Petanidou, T., Sandel, B., Schleuning, M., Wang, Z., Rahbek, C., Sutherland, W.J., Svenning, J.-C., Olesen J.M. 2013. Historical climate-change influences modularity and nestedness of pollination networks. Ecography, 36, pp. 1331–1340.
http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0587.2013.00201.x/abstract