1. Alexander, C.
(1964), Notes on the Synthesis of Form, Harvard University Press, Cambridge, MA.
2. Ehn, P.
and
Kyng, M.
(1987), “The collective resource approach to systems design”, in
Bjerknes, G.
,
Ehn, P.
and
Kyng, M.
(Eds), Computers and Democracy – A Scandinavian Challenge, Gower, Aldershot.
3. Krippendorff, K.
(1989), “Product semantics: a triangulation and four design theories”, in
Väkevä, S.
(Ed.), Product Semantic '89, University of Industrial Arts, Helsinki.
4. Ricoeur, P.
(1984), Time and Narrative, Vol. 1, University of Chicago Press, Chicago, IL.
5. Simon, H.A.
(1996), The Sciences of the Artificial, 3rd ed., The MIT Press, Cambridge, MA.