Bibliographies ; DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Multilingualism; Polylingualism; Plurilingualism ; EuroCom; EuroComRom; EuroComGerm; EuroComSlav; EuroComDidact; EuroComTranslat; Brückensprache; Galatea; Intercomprehension ; Dreisprachige Erziehung; Trilingual education; Multilingual education ; German