4Baker, P. & Hacker, M. S., 1985, Wittgenstein: Rules, Grammar and Necessity, Blackwell.
5Glock (ed.), 1996, A Wittgenstein Dictionary, Blackwell.
6Hacker, 1990, An Analytical Commentary on the Philosophical Investigation: Wittgenstein, Meaning and Mind, Vol. 3, Basil Blackwell.
7Keicher, K. , 2008, "Heidegger und Wittgenstein zur Ontologie und Praxis der Technik", in Wittgenstein and the Philosophy of Information, Vol 6. , A. Pichler & H. Hrachovec ( eds. ), 2009, ontos verlag. Oxford English Dictionary ( 20 Vol. ), second edition on CD-ROM ( v. 4.0 ), Oxford University Press.
8Rubinstein, D. , 1981, Marx and Wittgenstein, Social Praxis and Social Explanation, Routledge.
9Schatzki, T. , 2002, " Marx and Wittgenstein as natural historians ", in Marx and Wittgenstein, Knowledge, Morality and Politics, G. Kitching & N. Pleasants (eds.), Routledge.
10Wittgenstein, L. , 1953, Philosophical Investigations, G. E. M. Anscombe and R. Rhees (eds.), G. E. M. Anscombe (trans.), Blackwell. 1958, The Blue and Brown Books, Blackwell.
