1. Alexandersson J, Buschbeck-Wolf B, Fujinami T, Kipp M, Koch S, Maier E, Reithinger N, Schmitz B, Siegel M (1998) Dialogue acts in VERBMOBIL-2, 2nd edn. Verbmobil Report 226
2. Batliner A, Buckow J, Huber R, Warnke V, Nöth E, Niemann H (1999) Prosodic feature evaluation: brute force or well designed? In: Proc ICPHS, San Francisco, pp 2315–2318
3. Batliner A, Nutt M, Warnke V, Nöth E, Buckow J, Huber R, Niemann H (1999) Automatic annotation and classification of phrase accents in spontaneous speech. In: Proc Eurospeech, Budapest, pp 519–522
4. Batliner A, Buckow A, Niemann H, Nöth E, Warnke V (2000) The prosody module. In: Wahlster W (ed) Verbmobil: foundations of speech-to-speech translations. Springer, Berlin, pp 106–121
5. Batliner A, Buckow J, Huber R, Warnke V, Nöth E, Niemann H (2001) Boiling down prosody for the classification of boundaries and accents in German and English. In: Proc Eurospeech, Aalborg, pp 2781–2784