Submitted on: 19 March 2006.
Revised on: 11 May 2006.
Accepted on: 05 July 2006.
___________________JOURNAL OF THE EUROPEAN MATHEMATICAL SOCIETY
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Submitted on: 09 January 2025.
Revised on: 23 February 2025.
Accepted on: 06 March 2025.
___________________JOURNAL OF THE EUROPEAN MATHEMATICAL SOCIETY
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Submitted on: 21 April 2013.
Revised on: 08 June 2013.
Accepted on: 15 July 2013.
___________________JOURNAL OF THE EUROPEAN MATHEMATICAL SOCIETY