@incollection {geissler2000a,
	title = {Monitoring living biomass with in situ microscopy},
	year = {2000},
	pages = {632--633},
	publisher = {Academic Press},
	chapter = {A12},
	author = {Peter Gei{\ss}ler and Thomas Scholz and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
