OSS 2011
19-24 September 2011, Salvador, BA, Brazil

OSS 2010
30 May - 2 June 2010, Notre Dame, IN, USA

OSS 2009
3-6 June 2009, Skövde, Sweden

OSS 2008
7-10 September 2008, Milan, Italy

OSS 2007
June 11-14 2007, Limerick, Ireland

OSS 2006
June 8-10 2006, Grand Hotel, Como, Italy

OSS 2005
Genova, Italy, July 11 - 15, 2005