1. A. Anderson (1973) The Bogart preference structures: Applications, J. Math. Sociology 3, p. 67.
2. K.J. Arrow (1951) Social Choice and Individual Values, John Wiley and Sons, Inc., New York.
3. K. Baker, P. Fishburn and F. Roberts, Partial Orders of Dimension 2, Interval Orders and Interval Graphs, Rand Publication, P 4376.
4. J.P. Barthélemy (1979) Caractérisations axiomatiques de la distance de la différence métrique entre des relations binaires, Math. Sci. Humaines, 67, 85–113.
5. J.P. Barthélemy, Cl. Flament, and B. Monjardet (1982) Ordered sets and social sciences, in: Symp. Ordered Sets ( I. Rival, ed.) Reidel, Dordrecht-Boston, 721–758.