Brovkin, V., Levis, S., Loutre, M., Crucifix, M., Claussen, M., Ganopolski, A., Kubatzki, C., & Petoukhov, V. (2003).
Stability analysis of the climate-vegetation system in the northern high latitudes. Climatic Change,
57(1-2), 119-138. doi:10.1023/A:1022168609525.