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.
Među potpisnicima, članovima grupe Evropske narodne stranke/Evropskih demokrata (EPP/ED), jesu Dimitar Abadžijev, Marija Kapon i bivši gradonačelnik Sofije Stefan Sofijanski.