Gianni Bosi María J. Campión Juan Carlos Candeal Esteban Induráin Interval-Valued Representability of Qualitative Data: the Continuous Case. 299-319 2007 15 International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 3 http://dx.doi.org/10.1142/S0218488507004698 db/journals/ijufks/ijufks15.html#BosiCCI07