1. Von Neumann J, Morgenstern O. Theory of Games and Economic Behaviour. 2nd ed. Princeton University Press; 1947.
2. Savage LJ. The Foundations of Statistics. 2nd ed. New York: Wiley; 1954.
3. Modelling uncertainty;Montero;J Inform Sci,2010
4. Miranda E, Couso I, Gil P. Approximations of upper and lower probabilities by measurable selections. J Inform Sci 2010; 180(8), p.1407-1417.
5. Decision making with second order information granules;Aliev;Granular computing intelligent systems S Springer-Verlag,2011