@inproceedings{ACIR-1999-Helderman,
	author        = "L. M. Helderman",
	booktitle     = "{Proceedings of the 21st Annual BCS-IRSG Colloquium on Information Retrieval Research: Challenge of Image Retrieval}",
	ee            = "http://ewic.bcs.org/content/ConWebDoc/4249",
	publisher     = "{BCS}",
	series        = "{Workshops in Computing}",
	title         = "{Knowledge Management and Information Retrieval: Some New Challenges}",
	year          = 1999,
}