Sarwari, Abdul Qahar, and Mohammad Nubli Abdul Wahab. “The Effectiveness of HRV-Biofeedback Technology and Heart Rate Variability on Intercultural Communication Competence Among Postgraduate Students from Different Nationalities”. The International Journal of Humanities & Social Studies 5, no. 10 (October 31, 2017). Accessed July 23, 2024. https://internationaljournalcorner.com/index.php/theijhss/article/view/125575.