Veronica Biazzo Angelo Gilio Giuseppe Sanfilippo On the Checking of G-Coherence of Conditional Probability Bounds. 75-104 2003 11 International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems Supplement-2 http://dx.doi.org/10.1142/S0218488503002442 db/journals/ijufks/ijufks11.html#BiazzoGS03