- "Kochbuch für gute Sprach Applikationen" (Speech application cookbook - expertise consultancy provided; download PDF) - Paper on Wizard-of-Oz based VUI testing (in German; published on voice-community.de)
Just as a minor marketing pitch: Last hard copies of my PHD thesis are being sold on amazon.de - at a bargain price for € 9.99. So, if you are interested in hypertext and linguistic theory - and have good German reading skills ...