@article {35941,
	title = {Evaluation of indicators of nitrogen limitation in deep prairie lakes with laboratory bioassays and limnocorrals},
	volume = {159},
	year = {1988},
	pages = {269-276},
	publisher = {Hydrobiologia},
	url = {http://www.springerlink.com/content/w483423t4g758u87/},
	author = {Prepas, E. E. and Trimbee, A. M.}
}
