Charnvivit, P., Thubthong, N., & Luksaneeyanawin, S. (2016). Cluster Analysis of Prominent Features for Determining Stress Levels in Thai Speech. ECTI Transactions on Computer and Information Technology (ECTI-CIT), 2(2), 109–115. https://doi.org/10.37936/ecti-cit.200622.53280