| 15 | 2022 | Piran, Slovenia lectures are online available |
| 14 | 2017 | Taormina, Italy |
| 13 | 2014 | Grahamstown, South Africa |
| 12 | 2011 | Dartington, UK |
| 11 | 2008 | Esperance, Australia |
| 10 | 2005 | Bled, Slovenia |
| 9 | 2002 | Banff, Canada |
| 8 | 1999 | Beijing, China |
| 7 | 1996 | Baveno, Italy |
| 6 | 1993 | St.Barbara, USA |
| 5 | 1990 | Uppsala, Sweden |
| 4 | 1987 | Melbourne, Australia |
| 3 | 1984 | Geneva, Switzerland |
| 2 | 1981 | Kingston, Canada |
| 1 | 1976 | Amsterdam, Netherlands |
