Không quân Serbia entry at World Air Forces website
AIRSERBIA - Serbian Aeronautical Information Network
Soko J-22 Orao at Airliners.net
Photos at Avioni.net: Orao in low level flight at Kecskemet airshow in 2005, also here: at Batajnica airport, and here: at Batajnica.
Photo at ABG (Avijacija Bez Granica): Orao NJ-22 in flight 1980s