Hoppe, M. The symbol in the austrian literature of the turn of the century: Problems and attempted solutions / Manfred Hoppe. The symbolist movement in the literature of European languages.(1982).

Hoppe, Manfred. "The Symbol in the Austrian Literature of the Turn of the Century: Problems and Attempted Solutions / Manfred Hoppe." The Symbolist Movement in the Literature of European Languages.(1982) .

Hoppe, Manfred. "The Symbol in the Austrian Literature of the Turn of the Century: Problems and Attempted Solutions / Manfred Hoppe." The Symbolist Movement in the Literature of European Languages.(1982), .