(The Sofia Echo - 06/05/11; Mediafax, Agenţia de ştiri FOCUS - 05/05/11; Swissinfo, Nine O'clock, Mediafax, Dnevnik.bg, Agenţia de ştiri FOCUS - 04/05/11; EurActiv - 03/05/11; Mediapool - 30/04/11; Comisia Europeană; pagina web a Departamentului Federal Elveţian al Justiţiei şi Poliţiei)
(The Sofia Echo - 06/05/11; Mediafax, FOCUS News Agency - 05/05/11; Swissinfo, Nine O'clock, Mediafax, Dnevnik.bg, FOCUS News Agency - 04/05/11; EurActiv - 03/05/11; Mediapool - 30/04/11; European Commission; Website of the Swiss Federal Department of Justice and Police)