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Lucia Vaina, Jaakko Hintikka (1984) Cognitive constraints on communication: representations and processes, Dordrecht, Springer.
Two types of discourse in Hölderlin's madness
Roman Jakobson, Grete Lübbe-Grothues
pp. 115-136
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(1976) "Ein Blick auf Die Aussicht von Hölderlin", in: Jakobson Roman, Hölderlin, Klee, Brecht, Frankfurt am Main, Suhrkamp, pp.27-96.