@book{207847,
	author = {Luntley, Michael,},
	title = {Wittgenstein : opening investigations /},
	publisher = {Wiley Blackwell,},
	year = {2015.},
	address = {Malden, MA ;},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118978504}
}