@article {Heiler-Schnoerr-06b,
	title = {Learning Sparse Representations by Non-Negative Matrix Factorization and Sequential Cone Programming},
	journal = {J. Mach. Learning Res.},
	volume = {7},
	year = {2006},
	month = {July},
	pages = {1385{\textendash}1407},
	url = {http://www.cvgpr.uni-mannheim.de/Publications},
	author = {Heiler, M. and Schn{\"o}rr, C.}
}
@conference {Heiler-Schnoerr-05a,
	title = {Learning Sparse Image Codes by Convex Programming},
	booktitle = {Proc. Tenth IEEE Int. Conf. Computer Vision (ICCV{\textquoteright}05)},
	year = {2005},
	month = {Oct. 15-21},
	pages = {1667-1674},
	address = {Beijing, China},
	author = {Heiler, M. and Schn{\"o}rr, C.}
}
