@article{journals/orl/Tsitsiklis07,
	title = {NP-Hardness of checking the unichain condition in average cost MDPs.},
	author = {John N. Tsitsiklis},
	journal = {Oper. Res. Lett.},
	number = {3},
	pages = {319-323},
	url = {http://dblp.uni-trier.de/db/journals/orl/orl35.html#Tsitsiklis07},
	volume = {35},
	year = {2007},
	biburl = {http://www.bibsonomy.org/bibtex/24877e32b6fca2a38108711e9151e7d3a/dblp},
	description = {dblp},
	ee = {http://dx.doi.org/10.1016/j.orl.2006.06.005}, date = {2008-06-14},
	keywords = {dblp }
}