Columbia subject headings:
German literature--20th century--History and criticism.
German literature--21st century--History and criticism.
Popular literature--Germany--History and criticism.
Harvard subject headings:
German literature--History and criticism--Congresses
Literature, Experimental--Congresses.
Popular literature--History and criticism--Congresses.
Popular music--History and criticism--Congresses.
Princeton subject headings:
German literature--20th century--History and criticism.
German literature--21st century--History and criticism.
Popular literature--Germany--History and criticism.