@inproceedings{ICPR-v3-2002-CheungI,
	author        = "Kent K. T. Cheung and Horace Ho-Shing Ip",
	booktitle     = "{Proceedings of the 16th International Conference on Pattern Recognition, Volume 3}",
	doi           = "10.1109/ICPR.2002.1047784",
	isbn          = "0-7695-1695-5",
	pages         = "16--19",
	publisher     = "{IEEE Computer Society}",
	title         = "{Semantic Retrieval by Spatial Relationships}",
	year          = 2002,
}