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| Philippe Bich |
| Paris School of Economics, Centre d'Economie de la Sorbonne |
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| 106/112 Boulevard de l'Hôpital |
| 106/112 Boulevard de l'Hôpital |
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| Paris, 75647 Paris Cedex 13 |
| France |
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| bich@univ-paris1.fr |
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JEL Areas:
C0 : Mathematical and Quantitative Methods: General
D0 : Microeconomics: General |
