| https://www.cad.gov.rs – Direktorat civilnog vazduhoplovstva Republike Srbije |
| https://www.paris.icao.int – ICAO EUR/NAT Office website |
| https://www.eurocontrol.int – Eurocontrol |
| https://www.eurocontrol.int/network-operations – CFMU web page |
| https://www.public.cfmu.eurocontrol.int/PUBPORTAL/gateway/spec/index.html – NOP – Network Operational Portal |
| https://www.eurocontrol.int/articles/european-aviation-crisis-coordination-cell-eaccc – EACCC – European Aviation Crisis Coordination Cell |
| https://www.eurocontrol.int/network-operations/nm-operational-services-and-products - Request for access |
| https://www.eurocontrol.int/network-management/publications - Guidance on ATFM in the NM area of operations |
| www.europa.eu/echo – ECHO - European Commission/Humanitarian Aid & Civil Protection |
| https://easa.europa.eu – European Aviation Safety Agency |
| https://www.icao.int/anb/iavwopsg/ – IAVW Operations Group website |
| https://www.metoffice.gov.uk/aviation/vaac – VAAC London |
| https://www.metoffice.gov.uk/aviation/sadis - SADIS |
| https://aviationweather.gov/wifs/page/open/id/19 - WIFS |
| https://www.meteo.fr/vaac/eindex.html – VAAC Toulouse (english) |
| https://www.skybrary.aero/index.php/Volcanic_Ash – Useful information about VA and aviation |
| https://www.smatsa.rs – Kontrola letenja Srbije i Crne Gore SMATSA doo Beograd |
| https://www.caa.me – Agencija za civilno vazduhoplovstvo Crne Gore |
| https://www.bhdca.gov.ba – Direkcija za civilno vazduhoplovstvo BiH |
| https://www.crocontrol.hr – Croatia Control - Hrvatska kontrola zračne plovidbe |
| https://www.hungarocontrol.hu – Hungarian Air Navigation Services |
| https://www.romatsa.ro – Romanian Air Traffic Services Administration |
| https://www2.bulatsa.com – Bulgarian Air Traffic Services Authority |
| https://macvacc.org – Macedonia Air Traffic Control |
