@book{109960,
	author = {Du, Dingzhu, and Ko, Ker-I,},
	title = {Theory of computational complexity /},
	publisher = {Wiley,},
	year = {2014.},
	series = {Wiley Series in Discrete Mathematics and Optimization},
	address = {Hoboken, New Jersey :},
	edition = {Second edition.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10876079}
}