On the perceptual salience of melodical variations and its consequences for intonation synthesis. - René Collier; A. de Zitter; Jacques M. B. Terken (EUROSPEECH, 1989)

Prosody transplantation in text-to-speech: applications and tools. - Bert Van Coile; A. de Zitter; Luc Van Tichelen; Annemie Vorstermans (SSW, 1994)