Media type: E-Article Title: Hierarchies of ambiguous beliefs Contributor: Ahn, David S. imprint: Elsevier BV, 2007 Published in: Journal of Economic Theory, 136 (2007) 1, Seite 286-301 Language: English DOI: 10.1016/j.jet.2006.08.004 ISSN: 0022-0531 Keywords: Economics and Econometrics Origination: Footnote: