1. Teixeira, J.P.; Ferreira, D.; Carneiro, S.: Análise acústica vocal - determinação do Jitter e Shimmer para diagnóstico de patalogias da fala. In 6° Congresso Luso-Moçambicano de Engenharia (2011).
2. Lopes, J. Ambiente da análise robusta dos principais parâmetros da voz. Msc. University of Porto, (2008).
3. Analysis and Classificatoin of Voice Pathologies Using Glottal Signal Parameters;Foreno;Journal of Voice,2015
4. Brockmann M, Drinnan M J, Storck C, Carding P N.: Reliable Jitter and Shimmer Measurements in Voice Clinics: The Relevance of Vowel, Gender, Vocal Intensity, and Fundamental Frequency Effects in a Typical Clinical Task. In Journal of Voice. Volume 25, Issue 1 Pages 44-53, January (2011).
5. Silva D G, Oliveira L C, Andrea M.: Jitter Estimation Algorithms for Detection of Pathological Voices. EURASIP Journal on Advances in Signal Processing, (2009).