Borthen, Kaja, Barbara Hemforth, Barbara Mertins, Bergljot Behrens, and Cathrine Fabricius-Hansen. "Referring Expressions in Speech Reports." In Psycholinguistic Approaches to Meaning and Understanding across Languages, 111-142. Studies in Theoretical Psycholinguistics. Dordrecht: Springer, 2014.

Hemforth, Barbara, Kaja Borthen, Barbara Schmiedtova, Bergljot Behrens, and Cathrine Fabricius-Hansen. Referring expressions in direct and indirect speech in Czech, English, German and Norwegian In International Conference of Nordic and General Linguistics. Freiburg, Germany, 2012.