DDR; German Democratic Republic ; Bundesrepublik Deutschland; Federal Republic of Germany; BRD; Germany ; Forschungsgeschichte; History of linguistics ; History of linguistics (20th century) ; Discourse analysis (pragm.) ; Diskursgrammatik; Gesprächsanalyse; Konversationsgrammatik; Conversational analysis (pragm.) ; Communication research ; Conflict research ; Sociolinguistics ; Language and politics ; Discourse analysis (text.) ; Text analysis ; German