TY - CPAPER AU - D. Syrakov AU - K. Ganev AU - M. Prodanova AU - N. Miloshev AU - G. Jordanov AU - I. Etropolska AU - K. Slavo TI - A SYSTEM FOR INFORMATION AND FORECAST OF AIR QUALITY OVER BULGARIA T2 - 9th International Multidisciplinary Scientific GeoConference SGEM2009 PY - 2009 SP - 297 EP - 304 PB - SGEM Scientific GeoConference ER -