1. Catastrophic shifts in ecosystems;Scheffer;Nature,2001
2. Carpenter SR (2003) Regime Shifts in Lake Ecosystems: Pattern and Variation (International Ecology Institute, Oldendorf, Germany).
3. MA (2005) Ecosystems and Human Well-Being: Synthesis (Island, Washington DC).
4. IPCC (2007) Climate Change 2007: Synthesis Report (IPCC, Geneva).
5. Steffen WL (2004) Global Change and the Earth System: A Planet Under Pressure (Springer, Berlin, Germany).