(The Sofia Echo - 06/05/11; Mediafax, Novinska agencija FOCUS - 05/05/11; Swissinfo, Nine O'clock, Mediafax, Dnevnik.bg, Novinska agencija FOCUS - 04/05/11; EurActiv - 03/05/11; Mediapool - 30/04/11; Evropska komisija; Internet stranica švicarskog Federalnog ministarstva pravde i policije)
(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)