1st SeminarCopenhagen [DK], 1993 2nd SeminarLaupen [CH], 1994 3rd SeminarRoskilde [DK], 1998 4th SeminarInterlaken [CH], 1999 5th SeminarGermersheim [DE], 2004 6th SeminarCopenhagen [DK], 2009 7th SeminarDronten [NL], 2012 8th SeminarDornbirn [AT], 2015