@inproceedings{SIGIR-1998-SwanA,
	author        = "Russell C. Swan and James Allan",
	booktitle     = "{Proceedings of the 21st International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	cdrom         = "SIGIR1998/P173.pdf",
	doi           = "10.1145/290941.290987",
	pages         = "173--181",
	publisher     = "{ACM}",
	title         = "{Aspect Windows, 3-D Visualizations, and Indirect Comparisons of Information Retrieval Systems}",
	year          = 1998,
}