[[1] http://ready.arl.noaa.gov/HYSPLIT.php]Search in Google Scholar
[[2] http://www.bsc.es/earth-sciences/mineral-dust-forecast-system/bsc-dream8b-forecast/]Search in Google Scholar
[[3] The German Contribution to the WMO GAW Program “Monitoring and Research of Climate, Weather&Environmental Change”, 2006, 87-88.]Search in Google Scholar
[[4] Andrews E.; Ogren J.A., et al., Climatology of aerosol radiative properties in the free troposphere, 2011, 102, Issue 4, Pages 365-39310.1016/j.atmosres.2011.08.017]Search in Google Scholar
[[5] Beddows D. C. S. et al., Variations in tropospheric submicron particle size distributions across the European continent 2008-2009, 2014, 14, 4327-434810.5194/acp-14-4327-2014]Search in Google Scholar
[[6] Penev I.; Stamenov J., et al., Compt. Rend. de l’ABS, 2010, 63, n.9, 1273-1278]Search in Google Scholar
[[7] I. Penev, St. Georgiev, Hr. Angelov, T. Arsov, Compt. Rend. de l’ABS, v. 68, n.4, 449-454, 2015]Search in Google Scholar
[[8] Masson O.; Penev I. et al., Tracking of Airborne Radionuclides from the Damaged Fukushima Dai-Ichi Nuclear Reactors by European Networks, Environ. Sci. Technol., 2011, 45 (18), 7670-767710.1021/es201715821809844]Search in Google Scholar