| NAME | TITLE | Location | TIME |
| IAU SYMPOSIUM 234 | Planetary Nebulae in Our Galaxy and Beyond | Waikoloa Beach, Hawaii, USA | April 3-7 2006 |
| NAME | TITLE | Location | TIME |
| International Tartu Workshop | Thermal and ionization aspects of flows from hot stars: Observations and theory | Tartu, Estonia | August. 23 -27, 1999 |
| JENAM -2000 | EUROPEAN ASTRONOMY AT THE TURN OF THE MILLENNIUM | Moskow, Russia | May 29 - June 3, 2000 |