Rapold, C. J. (2010). Defining converbs ten years on - A hitchhikers'guide. In S. Völlmin, A. Amha, C. J. Rapold, & S. Zaugg-Coretti (Eds.), Converbs, medial verbs, clause chaining and related issues (pp. 7-30). Köln: Rüdiger Köppe Verlag.