Study of the pollution exchange between Bulgaria and northern Greece

Zerefos, C. ; Syrakov, D. ; Ganev, K. ; Vasaras, A. ; Kourtidis, K. ; Tzortziou, Maria ; Prodanova, M. ; Mimitrova, R. ; Georgieva, E. ; Yordanov, D. ; Miloshev, N. (2004). . International Journal of Environment and Pollution, 22 , 163-185.