@article {47854,
	title = {Frequent regime shifts in trophic states in shallow lakes on the boreal plain : alternative " unstable" states?},
	volume = {52},
	year = {2007},
	pages = {2002-2012},
	publisher = {Limnology and Oceanography},
	url = {http://www.plantbiology.siu.edu/faculty/vitt/pdf/41-1976.pdf},
	author = {Bayley, S. E. and Creed, I. F. and Sass, G. Z. and Wong, A. S.}
}
