1982 Performance in Artothek Colonia ( D )
Performance " Glas und Music " Galerie Thiemann" Neuwied
mit Jan Fryderik Dobrowolski ( Jazz Piano )
1984   International Glass Congress " Glas und Architektur " Sars-Poterie ( F ) "
International Glass Congress and Workshop - Sunderland ( GB )
1986   Installation " Utopoli " :
- LandesMuseum Oldenburg ( D )
- Ecole des Arts Decoratifs - Geneve ( CH )
1988   Installation " Intermezzo " : Kunstmuseum Düsseldorf ( D )
Installation " Utopoli " : Istituto Cultura Italiano a Colonia ( D )
1991   Installation " la tavola rotonda " : Espace Duchamp-Villon a Rouen ( F )
Installation " Dreiklang " Glas, Klang, Licht " in München ( D )
Installation " Utopoli " : Städtische Galerie in Gladbeck ( D )
1996 International Artist in Residence : College of Art and Design Guernsey ( GB )
1997 Installation " Canal Grande a Venezia" - Biennale Internazionale del Vetro (I)
1999 Installation und Skulpturen inder Stadt.. Sant´Agata dei Goti ( I )
2004 Installation " Glas, Licht, Kohle ) "
Schloss Museum Ludwig - Oberhausen ( D )
International Artist in Residence - College of Art and Design Guernsey ( GB )
2011 Biennale du Verre a Venezia ( I ) - Installation Skulpturen in Palazzo Bru Zane
Installation " Utopoli " : Musée d´Art Moderne Würth - Erstein ( F )