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ENUMATH 2007, Graz, Austria, September 10-14, 2007
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PDE Constrained Optimization, Tomar, Portugal July 26-29, 2005
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ENUMATH 2005, Santiago de Compostela
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17th Int. Conf. DDM, Strobl, Austria
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16th Int. Congr. Mathematik 2005, Klagenfurt, Austria, 18-23, Sept. 2005
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ECCOMAS 2004