The signatories, affiliated with the European People's Party/European Democrats (EPP/ED) group, included Dimitar Abadzhiev, Maria Kapon and former Sofia Mayor Stefan Sofianski.
Printre semnatari, afiliaţi grupului Partidului Popular European/Democraţii Europeni (EPP/ED), se numără Dimitar Abagiev, Maria Kapon şi fostul primar al Sofiei, Stefan Sofianski.