Asymptotic properties of QCD
Fermilab Workshop on QCD at Low x, Chicago, Sept. 2003
Physics with HERA2, Kolloquium, DESY Zeuthen, Oct. 22, 2003.
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Physik-Nobelpreis 2004, Kolloquium, Leipzig University, Jan. 2005.
From HERA to LHC, ATLAS-D Meeting, Zeuthen, Oct. 21, 2007.