@inproceedings{KEOD-2009-ArkoudasBK,
	author        = "Konstantine Arkoudas and Selmer Bringsjord and Sangeet Khemlani",
	booktitle     = "{Proceedings of the First International Conference on Knowledge Engineering and Ontology Development}",
	isbn          = "978-989-674-012-2",
	pages         = "80--87",
	publisher     = "{INSTICC Press}",
	title         = "{Qualitative Spatial Reasoning Via 3-Valued Heterogeneous Logic}",
	year          = 2009,
}