OBS_VALUE: <ul><li><a href=http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:32004R0549 target=_blank>Single European Sky package(Regulations (EC) 549/2004of the European Parliament and of the Council laying down the framework for the creation of the single European sky (the framework Regulation) , and  550/2004, 551/2004 and 552/2004, OJ L 96, p. 1-9; 10-19; 20-25; 26-42, adopted on 10 March 2004)</a></li></ul>