Avgust 2006. godine
Predavanja u Planetarijumu na Kalemegdanu
Astronomsko druÅ¡tvo RuÄ'er BoÅ¡ković Beograd
SAVREMENA ISTRAŽIVANJA SUNÄŒEVOG SISTEMA MEÄUPLANETARNIM LETELICIMA
PredavaÄ SrÄ'an Penjivrag iz A.D. "Milutin Milanković" Zrenjanin
http://www.adrb.org/pdf/9-las.pdf
Planetarijum na Kalemegdanu u Beogradu
(https://forum.astronomija.org.rs/proxy.php?request=http%3A%2F%2Fimg81.imageshack.us%2Fimg81%2F6596%2Fdsc00275uj5.jpg&hash=c9f9dfe855ca47869cf4fd036384a9fc628f713d) (http://imageshack.us)