1. Achinstein, P.: 1971, Law and Explanation: An Essay in the Philosophy of Science, Clarendon Press, Oxford.
2. Boden, M.: 1990, The Creative Mind: Myths and Mechanisms, Weidenfeld and Nicolson, London. Culler, J.: 1981, The Pursuit of Signs: Semiotics, Literature, Deconstruction, Routledge and Kegan Paul, London.
3. Eco, U.: 1976, A Theory of Semiotics, Indiana University Press, Bloomington.
4. Eco, U.: 1979, The Role of the Reader, Indiana University Press, Bloomington.
5. Eco, U.: 1983, Horns, hooves, insteps, in, Eco, U. and Sebeok, T. A. (eds), The Sign of Three: Dupin, Holmes, Peirce, Indiana University Press, Bloomington.