@article { ,
	title = {Modifications to the Schindler-Patalas zooplankton trap},
	journal = {Internationale Vereinigung fuer Theoretische und Angewandte Limnologie Verhandlungen},
	volume = {22},
	year = {1984},
	pages = {1417-1424},
	author = {G.W. Redfield}
}