1. Bowen, R.: A new proof of a theorem in utility theory. Int. Econ. Rev.9, 374 (1968)
2. Debreu, G.: Representation of a preference ordering by a numerical function. In: Thrall, Coombs, Davis (eds.) Decision processes. New York: Wiley 1954
3. Debreu, G.: Continuity properties of Paretian utility. Int. Econ. Rev.5, 285?293 (1964)
4. Mehta, G.: Recent developments in utility theory. Ind. Econ. J.30, 103?124 (1983)
5. Newman, M.H.A.: Elements of the topology of plane sets of points, 2nd. edn. Cambridge: Cambridge University Press 1964