@InProceedings{EndresFoldiak1999,
	author = "Endres, D. and F{\"o}ldi{\'a}k, P.",
	title = "Quadratic programming for learning sparse codes",
	booktitle = "Proceedings of the ninth international conference on artificial neural networks (ICANN99), IEE",
	pages = "593-596",
	year = "1999",
	publisher = "IEE Conference Publication No. 470. London: Institution of Electrical Engineers",
	volume = "2"
}