@conference {DBLP:conf/aaai/KoubarakisS99,
	title = {Querying Temporal Constraint Networks in PTIME},
	booktitle = {Proceedings of the Sixteenth National Conference on Artificial Intelligence and Eleventh Conference on Innovative Applications of Artificial Intelligence, July 18-22, 1999, Orlando, Florida, USA.},
	year = {1999},
	pages = {745{\textendash}750},
	url = {http://www.aaai.org/Library/AAAI/1999/aaai99-106.php},
	author = {Manolis Koubarakis and Spiros Skiadopoulos}
}
