@conference {SinFra04,
	title = {Learning depth},
	booktitle = {{Proc. 7.~T{\"u}binger Wahrnehmungskonferenz (TWK 2004)}},
	year = {2004},
	pages = {68},
	publisher = {Knirsch},
	organization = {Knirsch},
	address = {Kirchentellinsfurt}
}
@conference {SinEa04,
	title = {Learning depth from stereo},
	booktitle = {{Pattern Recognition, Proc.\ 26th DAGM Symposium}},
	series = {LNCS},
	volume = {3175},
	year = {2004},
	pages = {245~{\textendash}~252},
	publisher = {Springer},
	organization = {Springer},
	address = {Berlin}
}
