@article{gupta92blocksworld,
	title = {On the Complexity of Blocks-World Planning.},
	author = {Naresh Gupta and Dana S. Nau},
	journal = {Artif. Intell.},
	number = {2--3},
	pages = {223--254},
	url = {http://dblp.uni-trier.de/db/journals/ai/ai56.html#GuptaN92},
	volume = {56},
	year = {1992},
	biburl = {http://www.bibsonomy.org/bibtex/25d10df6c5c511d43916fd4ea138ff5a0/zeno},
	keywords = {1992 ais-07w blocks-world complexity planning }
}