@article {mathys2008occurrence,
	title = {Occurrence of Legionella in hot water systems of single-family residences in suburbs of two German cities with special reference to solar and district heating},
	journal = {International journal of hygiene and environmental health},
	volume = {211},
	number = {1},
	year = {2008},
	pages = {179{\textendash}185},
	publisher = {Elsevier},
	author = {Mathys, Werner and Stanke, Juliane and Harmuth, Margarita and Junge-Mathys, Elisabeth}
}
