| 2007 | KI | Text Generation in the SmartWeb Multimodal Dialogue System. | Ralf Engel, Daniel Sonntag |
| 2005 | ICMI | A look under the hood: design and development of the first SmartWeb system demonstrator. | Norbert Reithinger, Simon Bergweiler, Ralf Engel, Gerd Herzog, Norbert Pfleger, Massimo Romanelli, Daniel Sonntag |
| 2005 | Interspeech | Robust and efficient semantic parsing of free word order languages in spoken dialogue systems. | Ralf Engel |
| 2003 | ICMI | SmartKom: adaptive and flexible multimodal access to multiple applications. | Norbert Reithinger, Jan Alexandersson, Tilman Becker, Anselm Blocher, Ralf Engel, Markus Lckelt, Jochen Mller, Norbert Pfleger, Peter Poller, Michael Streit, Valentin Tschernomas |
| 2002 | Interspeech | SPIN: language understanding for spoken dialogue systems using a production system approach. | Ralf Engel |
| 2000 | ACL | Summarizing Multilingual Spoken Negotiation Dialogues. | Norbert Reithinger, Michael Kipp, Ralf Engel, Jan Alexandersson |
| 2000 | INLG | Multilingual Summary Generation in a Speech-To-Speech Translation System for Multilingual Dialogues. | Jan Alexandersson, Peter Poller, Michael Kipp, Ralf Engel |
| 2000 | Interspeech | CHUNKY: an example based machine translation system for spoken dialogs. | Ralf Engel |
| 1996 | Interspeech | Predicting dialogue acts for a speech-to-speech translation system. | Norbert Reithinger, Ralf Engel, Michael Kipp, Martin Klesen |