@book { DerTransformationsprozessBulgariensunddieEuropischeIntegration, title = "Der Transformationsprozess Bulgariens und die Europäische Integration", author = "Teodora {Ilieva}", year = "2008", publisher = "Diplom.de", address = "Hamburg, Deutschland", doi = "10.3239/9783836611053", url = "https://m.diplom.de/document/225668" }