"Stellar Astrophysics with the World Largest Telescopes" 7 - 10 September 2004, Torun, Poland
"Astrophysical Sources of
High Energy Particles and Radiation"
20 - 24 June 2005, Torun,
Poland
"Planetary Nebulae as
astronomical tools"
28 June - 2 July 2005, Gdansk, Poland