@book{126913,
	author = {Br�onmark, Christer. and Hansson, Lars-Anders.},
	title = {The biology of lakes and ponds /},
	publisher = {Oxford University Press,},
	year = {2007.},
	address = {Oxford :},
	edition = {Second edition.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10768627}
}