Biggs R, Blenckner T, Folke C, Gordon L, Norström A, Nyström M & Peterson GD. 2011. Regime Shifts. In: Sourcebook in Theoretical Ecology. Hastings A & Gross L (eds). University of California Press, Berkeley.

May RM, Levin SA, Sugihara G. 2008. Ecology for Bankers. Nature 451, 893-895.

Scheffer M. 2009. Critical transitions in Nature and Society. Princeton University Press.

Scheffer M, Carpenter SR, Foley JA, Folke C & Walker BH. 2001. Catastrophic shifts in ecosystems. Nature 413, 591-596.

Online resources:

Regime Shifts: What are they and why do they matter? http://www.regimeshifts.org/datasets-resources/details/15/26 

Wikipedia: http://en.wikipedia.org/wiki/Regime_shift

Resilience Alliance Thresholds Database: http://www.resalliance.org/index.php/thresholds_database