Catastrophe theoretical models in semantics (Katastrophentheoretische Modelle in der Semantik). - Wolfgang Wildgen (Quantitative Linguistik / Quantitative Linguistics, 2005)

Katastrophen- und Chaostheorie in der linguistischen Modellbildung (Catastrophe and chaos theory in linguistic model building). - Wolfgang Wildgen; Peter Jörg Plath (Quantitative Linguistik / Quantitative Linguistics, 2005)

Die Suche nach Invarianten und Harmonien im Bereich symbolischer Formen. - Wolfgang Wildgen (Exact Methods in the Study of Language and Text, 2007)

The Dimensionality of Text and Picture and the Cross-Cultural Organization of Semiotic Complexes. - Wolfgang Wildgen (Aspects of Automatic Text Analysis, 2007)