1. Badiou, A.: Being and Event. O. Feltham(trans.) Contiuum, London, New York (2005)
2. Chow, T.: A beginner’s guide to forcing. Contemporary Mathematics 479, 35–40 (2009)
3. Cohen, P.: Set Theory and the Continuum Hypothesis. Dover Publications, Mineola (1966)
4. Gödel, K.: The Consistency of the Continuum Hypothesis. Princeton University Press, Princeton (1940)
5. Hoffmann, M.: Is There a ‘Logic’ of Abduction?, http://user.uni-frankfurt.de/~wirth/texte/hoffmannabdu.htm