%D 2015 %O submitted %L eprints2742 %A Patrizia Berti %A Irene Crimaldi %A Luca Pratelli %A Pietro Rigo %K Bayesian nonparametrics ? Central limit theorem ? Clinical trial ? Random probability measure ? Stable convergence ? Urn model . %I IMT Institute for Advanced Studies Lucca %T Asymptotics for randomly reinforced urns with random barriers