@incollection {jaehne1999f,
	title = {Local averaging},
	year = {1999},
	pages = {153--174},
	publisher = {Academic Press},
	chapter = {7},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
