Symposiums

2015                        International Glass Symposium, Nový Bor

1990                        Plein-Air International Symposium , Libenau-Cottbus, Germany

1990                        International Stained Glass Symposium, Vilnius, Lithuania

1988                        The Third International Glass Symposium , Novy-Bor, Czech Republic  

1985                        The Second International Glass Symposium, Novy-Bor, Czech Republic