May 1998 Creative Glass.
Glass beada
With Nicole Zumkeller and Erik Seydoux « Ver et Framboise »
In Volketswil, Switzerland
Juine 1998 Urban Glass.
Glass beads
With Annette Rose- Shapiro.
In Coldigioco, Italy
March 1999 Fondation le Levant.
Glass beads
With Nicole Zumkeller and Erik Seydoux « Ver et Framboise »
In Lausanne, Switzerland
April 2001 Centre de cours Ballenberg
Glass beads
With Sandra Hafner-Giorgio
In Brienz, Switzerland
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June 2005 Mosaic Art School
Mosaïque en technique traditionnel Byzantine
With Lucian Notturni
In Ravenne, Italiy.
September 2006 Vytrum.
Fusing
With Yvonne Tromvoukis
In Chexbres, Switzerland
July 2008 Raulandsakademiet.
Jewellery
With Anne Synnøve Berglund
In Rauland, Norway
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