Structure and representation of an inventory for German speech synthesis. - Thomas Portele; Florian Höfer; Wolfgang J. Hess (ICSLP, 1994)

A mixed inventory structure for German concatenative synthesis. - Thomas Portele; Florian Höfer; Wolfgang Hess (SSW, 1994)

Speech synthesis using non-uniform units in the Verbmobil project. - Simon King 001; Thomas Portele; Florian Höfer (EUROSPEECH, 1997)