@conference{BaxEtAl-2005-MVA,
	author    = {I.~Bax and G.~Heidemann and H.~Ritter},
	title     = {{Using Non-negative Sparse Profiles in a Hierarchical Feature Extraction Network}},
	booktitle = {{Proc. 9th IAPR Conf. Machine Vision Applications}},
	pages     = {464--467},
	year      = {2005},
	address   = {Tsukuba Science City, Japan},
}