March 2005: With Victor Henning "Public aid mechanisms in feature film production: the EU MEDIA Plus Programme", published in "Media Culture & Society", Volume 27, Number 2
November 1999: With Lars Dittmann, Peter Fankhauser "AMetaCar – a Mediated eCommerce-Solution for the Used-Car-Market" Presented at the 4th Workshop "Federated Databases – Integration of Heterogeneous Information Sources", Technical University Berlin
July 1998: Collaboration on "The Transition from Technological Orientation towards Market Orientation in 12 German and 12 Dutch Firms" by Ulijn/Nagel