Speyer, Renée, Wieneke, George H., Kersing, Willem, and Dejonckere, Philippe H. (2005) Accuracy of measurements on digital videostroboscopic images of the vocal folds. Annals of Otology, Rhinology and Laryngology, 114 (6). pp. 443-450.

Speyer, R., Wieneke, G.H., and Dejonckere, P.H. (2004) Documentation of progress in voice therapy: perceptual, acoustic, and laryngostroboscopic findings pretherapy and posttherapy. Journal of Voice, 18 (3). pp. 325-340.

Speyer, Renée, Wieneke, George H., and Dejonckere, Philippe H. (2004) The use of acoustic parameters for the evaluation of voice therapy of dysphonic patients. Acta Acustica united with Acustica , 90 (3). pp. 520-527.

Speyer, Renée, Wieneke, G.H., and Dejonckere, P.H. (2004) Self-assessment of voice therapy for chronic dysphonia. Clinical Otolaryngology, 29 (1). pp. 66-74.

Speyer, Renée, Wieneke, George H., van Wijck-Warnaar, Ida, and Dejonckere, Philippe H. (2003) Effects of voice therapy on the voice range profiles of dysphonic patients. Journal of Voice, 17 (4). pp. 544-556.

Dejonckere, P.H., van Wijck-Warnaar, I., and Speyer, Renée (2003) Efficacy of voice therapy assessed with the Voice Range Profile (Phonetogram). Revue de Laryngologie - Otologie - Rhinologie, 124 (5). pp. 285-289.

Speyer, Renée, Wieneke, George, Ghazi Hosseini, Elham, Kempen, Pieter A., Kersing, Willem, and Dejonckere, Philippe H. (2002) Effect of voice therapy as objectively evaluated by digitized laryngeal stroboscopic imaging. Annals of Otology, Rhinology and Laryngology , 111 (10). pp. 902-908.