Source: https://www.researchgate.net/profile/Anastasia_Pampouchidou2/publication/318317913_Detection_de_la_depression_par_l'analyse_de_la_geometrie_faciale_et_de_la_parole/links/59b8e24a458515bb9c44eefb/Detection-de-la-depression-par-lanalyse-de-la-geometrie-faciale-et-de-la-parole.pdf