He has worked on corpora and text technology mainly in the context of German linguistics and processing of mathematical language. This includes computational archeology on the Bonn corpus of Early new High German from the 1970s, but also digital editions (e.g., the corpus of Kant's works, the edition of the archive of the Counts von Platen). He is now working at Leibniz Institute for the German Language for the CLARIAH-DE project concerned with building a European infrastructure for linguistic resources.