1. H. Cordeiro, (2016). Reconhecimento de Patologias da Voz usando Técnicas de Processamento da Fala, Universidade Nova de Lisboa: PhD Thesis.
2. M. Brockmann-Bauser, (2011). Improving jitter and shimmer measurements in normal voices, PhD Thesis. Newcastle: Institute of Cellular Medicine, Medical School, Newcastle University.
3. J. P. Teixeira, F. Teixeira, J. Fernandes e P. O. Fernandes, (2018) “Acoustic Analysis of Chronic Laryngitis - satistical Analysis of Sustained Speech Parameters,”.
4. Investigation of Voice Pathology Detection and Classification on Different Frequency Regions Using Correlation Functions;A.M.G.A.M.;Journal of Voice,2016
5. N. Alves, (2016). Diagnóstico Inteligente de Patologias da Laringe, Instituto Politécnico de Bragança: Master Thesis.