Sulír, M., Juhár, J., & Rusko, M. (2016). Development of the Slovak HMM-Based TTS System and Evaluation of Voices in Respect to the Used Vocoding Techniques. Computing and Informatics, 35(6), 1467–1490. https://cai.type.sk/content/2016/6/development-of-the-slovak-hmm-based-tts-system-and-evaluation-of-voices-in-respect-to-the-used-vocoding-techniques/