Stanek, Miroslav, and Milan Sigmund. “Psychological Stress Detection in Speech Using Return-to-Opening Phase Ratios in Glottis”. Elektronika ir Elektrotechnika 21, no. 5 (October 5, 2015): 59-63. Accessed April 24, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/13336.