Brovkin, V. Climate-Biogeosphere Interaction, The Land in the Earth System, MPI for Meteorology, Max Planck Society;
Scheffer, M., Bascompte, J., Brock, W. A., Brovkin, V., Carpenter, S. R., Dakos, V., et al. (2009). Early-warning signals for critical transitions [Review]. Nature, 461(7260), 53-59. doi:10.1038/nature08227.