@inproceedings{SIGIR-1988-Giger,
	author        = "H. P. Giger",
	booktitle     = "{Proceedings of the 11th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	cdrom         = "SIGIR1988/P275.pdf",
	doi           = "10.1145/62437.62461",
	isbn          = "2-7061-0309-4",
	pages         = "275--289",
	publisher     = "{ACM}",
	title         = "{Concept Based Retrieval in Classical IR Systems}",
	year          = 1988,
}