(Europa, Euobserver, EurActiv, Πρακτορείο ειδήσεων FOCUS, Nature.com, BBC, ABC News, TVNZ, ITAR-TASS - 19/04/11, RFE/RL, VOA, Deutsche Welle - 18/04/11)
(Europa, Euobserver, EurActiv, FOCUS Haber Ajansı, Nature.com, BBC, ABC News, TVNZ, ITAR-TASS - 19/04/11; RFE/RL, VOA, Deutsche Welle - 18/04/11)